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US20100058673A1 - Tubular-member flange coupling - Google Patents

Tubular-member flange coupling Download PDF

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Publication number
US20100058673A1
US20100058673A1 US12/312,145 US31214507A US2010058673A1 US 20100058673 A1 US20100058673 A1 US 20100058673A1 US 31214507 A US31214507 A US 31214507A US 2010058673 A1 US2010058673 A1 US 2010058673A1
Authority
US
United States
Prior art keywords
tubular
recess
wind turbine
flange coupling
tubular member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/312,145
Other languages
English (en)
Inventor
Tomohiro Numajiri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD. reassignment MITSUBISHI HEAVY INDUSTRIES, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NUMAJIRI, TOMOHIRO
Publication of US20100058673A1 publication Critical patent/US20100058673A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/085—Details of flanges for tubular masts

Definitions

  • the present invention relates to, for example, a tubular-member flange coupling for connecting (coupling or joining) tubular members constituting a support tower of a wind turbine for wind turbine generator.
  • Patent Document 1 As a tubular-member flange coupling for connecting tubular members constituting a support tower of a wind turbine for wind turbine generator, for example, one disclosed in Patent Document 1 is known.
  • Patent Document 1
  • the present invention has been made in view of such circumstances, and an object thereof is to provide a tubular-member flange coupling capable of shortening the production process and reducing the manufacturing costs.
  • the present invention employs the following solutions.
  • a tubular-member flange coupling of the present invention is a tubular-member flange coupling in which a top or bottom end of a circumferential portion is mated to a bottom or top end of a tubular member to couple the tubular members to each other.
  • a recess having a substantially U-shape in cross-section is provided around a circumferential direction in a surface to be connected to the tubular member, at a position radially inward of a surface to be mated to the tubular member.
  • the tubular-member flange coupling of the present invention only requires machining of the recess having a substantially U-shape in cross-section, which is relatively easily machinable, in the surface to be connected to the tubular member. Because it is unnecessary to fabricate (machine) a tubular portion to be connected to the tubular member by cutting away a large part of the surface to be connected to the tubular member, as in the conventional case, the production process can be shortened and the manufacturing costs can be reduced.
  • the deformation (distortion) of the mating surface can be prevented, shaping for correcting the deformation of the mating surface can be made unnecessary.
  • the production process can be further shortened and the manufacturing costs can be further reduced.
  • the radius of curvature of a radially inward bottom surface of the recess be formed to be smaller than the radius of curvature of a radially outward bottom surface of the recess.
  • P.C.D. pitch circle diameter: the diameter of a circle formed by connecting the centers of bolt holes (bolt-hole pitch circle)
  • P.C.D. pitch circle diameter: the diameter of a circle formed by connecting the centers of bolt holes (bolt-hole pitch circle)
  • a wind turbine for wind turbine generator of the present invention includes a flange coupling capable of shortening the production process and reducing the manufacturing costs.
  • the wind turbine for wind turbine generator of the present invention can shorten the production process of the entire wind turbine for wind turbine generator and can reduce the manufacturing costs.
  • the present invention provides advantages in that the production process can be shortened and the manufacturing costs can be reduced.
  • FIG. 1 is a side view of a wind turbine for wind turbine generator having flange couplings according to an embodiment of the present invention.
  • FIG. 2 is a longitudinal sectional view of a relevant part in FIG. 1 .
  • FIG. 3 is a longitudinal sectional view of relevant parts of flange couplings according to another embodiment of the present invention, similar to FIG. 2 .
  • FIG. 4 is a longitudinal sectional view of relevant parts of flange couplings according to another embodiment of the present invention, similar to FIGS. 2 and 3 .
  • FIG. 5 is a longitudinal sectional view of relevant parts of flange couplings according to another embodiment of the present invention, similar to FIGS. 2 to 4 .
  • FIG. 6 is a longitudinal sectional view of relevant parts of flange couplings according to another embodiment of the present invention.
  • flange coupling A ring-shaped-member flange coupling (hereinafter, “flange coupling”) according to an embodiment of the present invention will be described below with reference to FIGS. 1 and 2 .
  • FIG. 1 is a side view of a wind turbine for wind turbine generator having flange couplings according to this embodiment
  • FIG. 2 is a longitudinal sectional view of a relevant part in FIG. 1 .
  • the wind turbine for wind turbine generator 1 includes a support tower (also referred to as “tower”) 2 installed upright on a foundation B, a nacelle 3 mounted on the top of the support tower 2 , and a rotor head 4 mounted to the nacelle 3 so as to be rotatable about a substantially horizontal axis.
  • a support tower also referred to as “tower”
  • nacelle 3 mounted on the top of the support tower 2
  • a rotor head 4 mounted to the nacelle 3 so as to be rotatable about a substantially horizontal axis.
  • a plurality of (for example, three) wind turbine rotor blades 5 are radially attached around the rotation axis of the rotor head 4 .
  • the force of the wind blowing in the rotation axis direction of the rotor head 4 against the wind turbine rotor blades 5 is converted into motive power for rotating the rotor head 4 about the rotation axis.
  • the support tower 2 has a structure in which a plurality of (for example, three) units 6 (refer to FIG. 2 ) are joined in the vertical direction.
  • Each unit 6 has a tubular member 7 (refer to FIG. 2 ) and a flange coupling 8 (refer to FIG. 2 ).
  • the tubular member 7 consists of a plurality of cylindrical segments (not shown) each having a cylindrical shape assembled together by fixing their ends by welding, or, consists of a plurality of circular-truncated-cone segments (not shown) each having a circular-truncated-cone shape with a diameter gradually decreasing upward, assembled by fixing their ends by welding, as shown in FIG. 2 .
  • the nacelle 3 is mounted on the top unit 6 of the units 6 constituting the support tower 2 and has a nacelle base plate (not shown) attached to the top end of the support tower 2 and a cover 9 for covering the nacelle base plate from above.
  • the flange couplings 8 are each a plate-like member having a ring shape (doughnut-shape) in plan view, in which a plurality of bolt holes 10 penetrating in the thickness direction (vertical direction in FIG. 2 ) are provided (formed) around the circumferential direction.
  • top or bottom end of the circumferential portion of the flange coupling 8 and the bottom or top end of the tubular member 7 are connected (coupled or joined) via a weld seam 11 located radially inward and a weld seam 12 located radially outward.
  • Reference numerals 13 , 14 , and 15 in FIG. 2 respectively denote a bolt, a nut, and a washer that connect (couple or join) the flange couplings 8 to each other.
  • a recess (groove) 16 having a ring shape (doughnut-shape) in plan view and a substantially U-shape in cross-section is provided (formed) around the circumferential direction in the upper or lower surface of the flange coupling 8 to be connected to the tubular member 7 .
  • the outer circumferential edge of the recess 16 is formed so as to be located approximately just beneath or above the inner circumferential surface of the tubular member 7 . That is, the outer circumferential edge of the recess 16 is formed (provided) so as to provide a connecting surface (coupling surface or mating surface) having a ring shape (doughnut shape) in plan view and having a width that is substantially the same as the thickness of the tubular member 7 at the circumferential portion of the flange coupling 8 .
  • the inner circumferential edge of the recess 16 is formed so as to be located approximately just beneath or above the outer circumferential surface of the washer 15 for connecting the flange couplings 8 to each other. That is, the inner circumferential edge of the recess 16 is formed (provided) such that the lower or upper surface of the washer 15 is entirely in contact (close contact) with the upper or lower surface of the flange coupling 8 .
  • the flange coupling 8 only requires machining of the recess 16 having a ring shape in plan view and a substantially U-shape in cross-section, which is relatively easily machinable, in the surface to be connected to the machine tubular member 7 . Because it is unnecessary to fabricate (machine) a tubular portion to be connected to the tubular member by cutting away a large part of the surface to be connected to the tubular member, as in the conventional case, the production process can be shortened and the manufacturing costs can be reduced.
  • the thickness can be kept at substantially the original thickness.
  • the deformation (distortion) of the mating surface 8 a can be prevented, shaping for correcting the deformation of the mating surface 8 a can be made unnecessary.
  • the production process can be further shortened and the manufacturing costs can be further reduced.
  • the internal force coefficient of the bolt 13 can be lowered.
  • a bolt with superior strength can be achieved.
  • FIG. 3 is a longitudinal sectional view of relevant parts of flange couplings according to this embodiment, similar to FIG. 2 .
  • Flange couplings 20 according to this embodiment differ from those according to the above-described embodiment in that each has a recess 21 instead of the recess 16 . Because other components are the same as those according to the above-described embodiment, an explanation of such components will be omitted.
  • the flange couplings 20 are each a plate-like member having a ring shape (doughnut-shape) in plan view, in which the plurality of bolt holes 10 penetrating in the thickness direction (vertical direction in FIG. 3 ) are provided (formed) around the circumferential direction.
  • top or bottom end of the circumferential portion of the flange coupling 20 and the bottom or top end of the tubular member 7 are connected (coupled or joined) via the weld seam 11 located radially inward and the weld seam 12 located radially outward.
  • a recess (groove) 21 having a ring shape (doughnut-shape) in plan view and a substantially U-shape in cross-section is provided (formed) around the circumferential direction in the upper or lower surface of the flange coupling 20 to be connected to the tubular member 7 .
  • the outer circumferential edge of the recess 21 is formed so as to be located approximately just beneath or above the inner circumferential surface of the tubular member 7 . That is, the outer circumferential edge of the recess 21 is formed (provided) so as to provide a connecting surface (coupling surface or mating surface) having a ring shape (doughnut shape) in plan view and having a width that is substantially the same as the thickness of the tubular member 7 at the circumferential portion of the flange coupling 20 .
  • the inner circumferential edge of the recess 21 is formed so as to be located radially outward (the left side in FIG. 3 ) of the inner circumferential surface of the recess 16 according to the above-described embodiment, i.e., formed such that the radius of curvature of the radially inward bottom surface of the recess 21 is smaller than the radius of curvature of the radially outward bottom surface of the recess 21 , and so as to be located approximately just beneath or above the outer circumferential surface of the washer 15 for connecting the flange couplings 20 to each other.
  • the inner circumferential edge of the recess 21 is formed (provided) such that the lower or upper surface of the washer 15 is entirely in contact (close contact) with the upper or lower surface of the flange coupling 20 .
  • a large P.C.D. pitch circle diameter: the diameter of a circle formed by connecting the centers of the bolt holes 10 (bolt-hole pitch circle)
  • P.C.D. pitch circle diameter: the diameter of a circle formed by connecting the centers of the bolt holes 10 (bolt-hole pitch circle)
  • the radius of curvature of the radially inward bottom surface of the recess 21 is set to be smaller than the radius of curvature of the radially outward bottom surface of the recess 21 .
  • the stress is concentrated on the radially inward bottom surface of the recess 21 .
  • higher compressive force fastening force or clamping force
  • the stress concentration on the radially inward bottom surface of the recess 21 is balanced out (covered) by the apparently improved fatigue strength.
  • generation of cracks in the radially inward bottom surface of the recess 21 can be prevented.
  • FIG. 4 is a longitudinal sectional view of relevant parts of flange couplings according to another embodiment of the present invention, similar to FIGS. 2 and 3 .
  • Flange couplings 30 according to this embodiment differ from those according to the above-described embodiment in that each has a recess 31 instead of the recesses 16 and 21 . Because other components are the same as those according to the above-described embodiment, an explanation of such components will be omitted.
  • the flange couplings 30 are each a plate-like member having a ring shape (doughnut-shape) in plan view, in which the plurality of bolt holes 10 penetrating in the thickness direction (vertical direction in FIG. 4 ) are provided (formed) around the circumferential direction.
  • top or bottom end of the circumferential portion of the flange coupling 30 and the bottom or top end of the tubular member 7 are connected (coupled or joined) via the weld seam 11 located radially inward and the weld seam 12 located radially outward.
  • a recess (groove) 31 having a ring shape (doughnut-shape) in plan view and a substantially U-shape in cross-section is provided (formed) around the circumferential direction in the upper or lower surface of the flange coupling 30 to be connected to the tubular member 7 .
  • the outer circumferential edge of the recess 31 is formed so as to be located approximately just beneath or above the inner circumferential surface of the tubular member 7 . That is, the outer circumferential edge of the recess 31 is formed (provided) so as to provide a connecting surface (coupling surface or mating surface) having a ring shape (doughnut shape) in plan view and having a width that is substantially the same as the thickness of the tubular member 7 at the circumferential portion of the flange coupling 30 .
  • the inner circumferential edge of the recess 31 at the opening end is formed so as to be located radially outward of the inner circumferential surface of the recess 16 (the left side in FIG. 4 ) and so as to be located approximately just beneath or above the outer circumferential surface of the washer 15 for connecting the flange couplings 30 to each other.
  • the inner circumferential edge of the recess 31 located at the opening end is formed (provided) such that the lower or upper surface of the washer 15 is entirely in contact (close contact) with the upper or lower surface of the flange coupling 30 .
  • the inner circumferential edge of the recess 31 at a deep part (on the bottom surface side) is, similarly to the inner circumferential edge at a deep part (on the bottom surface side) of the recess 16 , formed so as to be located radially inward of the inner circumferential edge of the recess 31 at the opening end.
  • the whole production process of the wind turbine for wind turbine generator 1 can be shortened and the manufacturing costs can be reduced.
  • the reliability of the support tower 2 can be improved and the reliability of the whole wind turbine for wind turbine generator 1 can be improved.
  • the recesses 16 , 21 , and 31 that are formed in the upper surface of the flange coupling 30 (that open upward) be filled with silicon, grease or the like.
  • the shape of the side surface of the flange couplings of the present invention is not limited to a cylindrical shape as shown in FIGS. 2 to 4 , but may be a circular-truncated-cone shape as shown in FIG. 5 .
  • the recesses 16 shown in FIG. 5 may each be a recess 16 a having a cross-section as shown in FIG. 6 , i.e., an inclined U shape that is cut along (so as to be parallel with) the side surface of the flange coupling 8 .

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Connection Of Plates (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Joining Of Building Structures In Genera (AREA)
US12/312,145 2007-08-31 2007-08-31 Tubular-member flange coupling Abandoned US20100058673A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/067015 WO2009028092A1 (fr) 2007-08-31 2007-08-31 Joint à brides pour élément tubulaire

Publications (1)

Publication Number Publication Date
US20100058673A1 true US20100058673A1 (en) 2010-03-11

Family

ID=40386836

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/312,145 Abandoned US20100058673A1 (en) 2007-08-31 2007-08-31 Tubular-member flange coupling

Country Status (9)

Country Link
US (1) US20100058673A1 (fr)
EP (1) EP2194214A4 (fr)
JP (1) JP5022440B2 (fr)
KR (1) KR101134959B1 (fr)
CN (1) CN101542056B (fr)
AU (1) AU2007358358B2 (fr)
CA (1) CA2668177C (fr)
MX (1) MX2009005193A (fr)
WO (1) WO2009028092A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080308696A1 (en) * 2005-11-24 2008-12-18 Jonas Kristensen Wind turbine tower, connection means for assembling a wind turbine tower and methods thereof
US20100307097A1 (en) * 2009-06-09 2010-12-09 Word Iii Thomas Nott Structural flange connection system and method
US20110131898A1 (en) * 2010-04-29 2011-06-09 Jacob Johannes Nies Flange connection
US20110154757A1 (en) * 2008-05-02 2011-06-30 Vestas Wind Systems A/S Tower section for a wind turbine tower
US20140000180A1 (en) * 2011-03-23 2014-01-02 Northcone Ab Yielding Post of Thin Sheet Metal and Method of Arranging Street Lighting
CN104019003A (zh) * 2014-06-04 2014-09-03 国电联合动力技术有限公司 一种法兰连接结构及含有其的防雷分段组合式塔架
EP2889474A1 (fr) * 2013-12-30 2015-07-01 Siemens Aktiengesellschaft Raccord à bride pour éolienne à action directe
US9091098B2 (en) * 2010-07-13 2015-07-28 Andresen Towers A/S Method of assembling a tubular building structure by using screw sockets
EP2937556A1 (fr) * 2014-04-25 2015-10-28 Siemens Aktiengesellschaft Bride d'éolienne
US20160017868A1 (en) * 2012-08-03 2016-01-21 James D. Lockwood Precast concrete post tensioned segmented wind turbine tower
US10113327B2 (en) * 2014-12-01 2018-10-30 Lafarge Section of concrete
US11332952B2 (en) * 2015-06-26 2022-05-17 Eno Energy Systems Gmbh Subsection of a tower section, a tower and a method for manufacturing a subsection of a tower section

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US8087898B2 (en) * 2009-12-15 2012-01-03 General Electric Company Stress relief flange and method for distributing stress for wind turbine components
DE102010020443A1 (de) * 2010-05-12 2011-11-17 Timber Tower Gmbh Turm für eine Windkraftanlage und Verfahren zum Errichten eines Turmes für eine Windkraftanlage
US9200620B2 (en) 2010-05-25 2015-12-01 Siemens Aktiengesellschaft Jacket structure for offshore constructions
KR101388882B1 (ko) 2011-03-25 2014-04-23 신닛테츠스미킨 카부시키카이샤 플랜지 디스크가 용접된 강관
KR20130079483A (ko) * 2011-11-04 2013-07-10 미츠비시 쥬고교 가부시키가이샤 타워 내장품 브래킷 구조 및 풍력 발전 장치
KR101685854B1 (ko) * 2015-12-03 2016-12-12 두산중공업 주식회사 풍력단지의 레트로피트 구조 및 이의 설치방법
JP7305384B2 (ja) * 2019-03-18 2023-07-10 出光興産株式会社 大型異径配管フランジ

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US2956821A (en) * 1956-10-08 1960-10-18 American Radiator & Standard Flanged pipe coupling for pressure vessels having stress compensating means
US4033418A (en) * 1974-01-31 1977-07-05 Lely Cornelis V D Tine mounting for rotary harrow including U-shaped recess
US4105227A (en) * 1977-05-11 1978-08-08 Ekberg Sven Erik Flange joint between pipe lengths
US4458924A (en) * 1980-12-01 1984-07-10 Gunter Schlicht Bimetal flange connector
US5230540A (en) * 1989-03-15 1993-07-27 Rolls-Royce Plc Fluid-tight joint with inclined flange face
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US20080145232A1 (en) * 2002-02-06 2008-06-19 Vestas Wind Systems A/S Wind turbine tower suspension means
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US20080041009A1 (en) * 2006-08-18 2008-02-21 General Electric Flangeless support structures
US20100024311A1 (en) * 2008-07-30 2010-02-04 Dustin Jon Wambeke Wind turbine assembly with tower mount
US20100126079A1 (en) * 2008-11-27 2010-05-27 Vestas Wind Systems A/S Wind power plant and a method for assembling the same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8225576B2 (en) * 2005-11-24 2012-07-24 Vestas Wind Systems A/S Wind turbine tower, connection means for assembling a wind turbine tower and methods thereof
US20080308696A1 (en) * 2005-11-24 2008-12-18 Jonas Kristensen Wind turbine tower, connection means for assembling a wind turbine tower and methods thereof
US20110154757A1 (en) * 2008-05-02 2011-06-30 Vestas Wind Systems A/S Tower section for a wind turbine tower
US20100307097A1 (en) * 2009-06-09 2010-12-09 Word Iii Thomas Nott Structural flange connection system and method
US8490337B2 (en) * 2009-06-09 2013-07-23 Thomas Nott Word, III Structural flange connection system and method
US20110131898A1 (en) * 2010-04-29 2011-06-09 Jacob Johannes Nies Flange connection
US9091098B2 (en) * 2010-07-13 2015-07-28 Andresen Towers A/S Method of assembling a tubular building structure by using screw sockets
US9175494B2 (en) 2010-07-13 2015-11-03 Andresen Towers A/S Method of assembling a tubular building structure by using screw sockets
US20140000180A1 (en) * 2011-03-23 2014-01-02 Northcone Ab Yielding Post of Thin Sheet Metal and Method of Arranging Street Lighting
US20160017868A1 (en) * 2012-08-03 2016-01-21 James D. Lockwood Precast concrete post tensioned segmented wind turbine tower
EP2889474A1 (fr) * 2013-12-30 2015-07-01 Siemens Aktiengesellschaft Raccord à bride pour éolienne à action directe
EP2937556A1 (fr) * 2014-04-25 2015-10-28 Siemens Aktiengesellschaft Bride d'éolienne
US9255395B2 (en) * 2014-04-25 2016-02-09 Siemens Aktiengesellschaft Flange of a wind turbine
CN104019003A (zh) * 2014-06-04 2014-09-03 国电联合动力技术有限公司 一种法兰连接结构及含有其的防雷分段组合式塔架
US10113327B2 (en) * 2014-12-01 2018-10-30 Lafarge Section of concrete
US11332952B2 (en) * 2015-06-26 2022-05-17 Eno Energy Systems Gmbh Subsection of a tower section, a tower and a method for manufacturing a subsection of a tower section

Also Published As

Publication number Publication date
EP2194214A4 (fr) 2011-03-23
CA2668177C (fr) 2012-10-23
CA2668177A1 (fr) 2009-03-05
KR20090086996A (ko) 2009-08-14
KR101134959B1 (ko) 2012-04-09
WO2009028092A1 (fr) 2009-03-05
JP5022440B2 (ja) 2012-09-12
JPWO2009028092A1 (ja) 2010-11-25
EP2194214A1 (fr) 2010-06-09
AU2007358358B2 (en) 2011-11-17
MX2009005193A (es) 2009-05-25
AU2007358358A1 (en) 2009-03-05
CN101542056A (zh) 2009-09-23
CN101542056B (zh) 2012-12-12

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