EP3219876B1 - Power pylon with flange connected tubular segments - Google Patents

Power pylon with flange connected tubular segments Download PDF

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Publication number
EP3219876B1
EP3219876B1 EP17159607.5A EP17159607A EP3219876B1 EP 3219876 B1 EP3219876 B1 EP 3219876B1 EP 17159607 A EP17159607 A EP 17159607A EP 3219876 B1 EP3219876 B1 EP 3219876B1
Authority
EP
European Patent Office
Prior art keywords
flange
flanges
annular
power pylon
opposing
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.)
Revoked
Application number
EP17159607.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3219876A1 (en
Inventor
Josephus Gerardus Maria PLATENBURG
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.)
VDL Groep BV
Original Assignee
VDL Groep BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=55949043&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3219876(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by VDL Groep BV filed Critical VDL Groep BV
Priority to EP19172737.9A priority Critical patent/EP3591143B1/en
Publication of EP3219876A1 publication Critical patent/EP3219876A1/en
Application granted granted Critical
Publication of EP3219876B1 publication Critical patent/EP3219876B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04H12/085—Details of flanges for tubular masts

Definitions

  • the invention relates to a power pylon comprising at least two tubular segments which are interconnected by an annular flange connection, the annular flange connection comprising two opposing annular flanges which are attached to the respective ends of the tubular segments, said annular flanges extending radially inwards and each having an end face that faces the end face of the opposing flange, the annular flanges each having through bores distributed in a circle, wherein the through bores of the two opposing flanges are aligned, wherein the annular flange connections furthermore comprise bolts that pass through said aligned through bores, and nuts cooperating with said bolts so as to bolt the opposing flanges together.
  • Wintrack pylon An example of such a pylon is known as "Wintrack pylon", which comprises two steel tubular segments with each a length of about 30m.
  • the outer diameter of this known pylon tapers from about 2,4m at the bottom to 0,5m at the top.
  • the wall thickness of the two tubular segments is about 16 mm.
  • the upper segment has a weight of about 13 tons and the lower segment has a weight of about 40 tons.
  • the pylon At the location of the flange connection the pylon has an outer diameter of about 1,2m.
  • the upper tubular segment of the "Wintrack pylon" has a flange attached (welded) at its lower end, which flange extends radially inwards.
  • the lower tubular segment has a flange attached (welded) at its upper end which also extends radially inwards.
  • the flanges are each provided with for example twenty-four through bores arranged in a circle. The bores of the opposing flanges are aligned and bolted together by bolts and nuts.
  • thermoplastic layer a layer of a thermoplastic material between the flanges to compensate for surface unevenness and, additionally with silicone filling mass to prevent moisture from entering between the flanges. This solution however requires additional parts and complication during installation (heat the thermoplastic layer).
  • DE 101 52 018 A1 shows a flange connection for a wind turbine tower.
  • Discrete inspection channels are is formed in one of the flanges corresponding with the location of the bolts in order to be able to check the contact between the contact surface and the surface of the flange at the radially outer side of flanges.
  • a fitting part can be applied if there is found a gap between the contact surface and the flange surface to close the gap. Afterwards the radially inner end of the inspection channel can be closed off with a contact piece formed as a ring segment.
  • US 2010/0117353 describes a flange connection for pylons of wind turbines.
  • the flanges have stiffening plates which extend in the axial and radial inward direction of the pylon. Opposing stiffening plates abut each other with a head surface when assembled. One of the opposing stiffening plates is indented in the head surface.
  • US 2004/0112002 describes a flange connection with a tubular portion for attachment to one end of a tubular component, in particular a tower segment of a wind turbine.
  • a tubular component in particular a tower segment of a wind turbine.
  • one of the flanges has a recess in its flange surface.
  • the present invention has for an object to mitigate the problem of exposure of the bolts to moist in a simple but effective manner.
  • a pylon according to the preamble of claim 1 wherein the end face of both of the opposing annular flanges has a central annular recessed zone that is machined in said end face, said central annular recessed zone being flanked by a radially outward engagement surface and a radially inward engagement surface which form the interface with the opposing flange.
  • connection structure achieves that two radially spaced relatively narrow coaxial annular interfaces are created between the two opposing flanges. Thereby any unevenness in the flange surfaces is compensated.
  • the flanges are manufactured separately from the tubular walls of the tubular pylon segments and are then attached to the respective tubular walls by welding. It is advantageous to manufacture only one single type of flange both for the upper and the lower pylon segment. This prevents that the wrong flange can be welded to the tubular wall and two opposing flanges can be of the type having no recess.
  • the central annular recessed zone has a width that is between 70% - 75%, preferably around 73% of the width of the end face of the annular flange.
  • the radially outward engagement surface and the radially inward engagement surface have substantially the same width.
  • the two radially spaced relatively narrow coaxial annular interfaces between the opposing flanges each have width that is about 12,5% -15% of the total flange width.
  • the annular flange has a thickness and the central annular recessed zone has a depth with respect to the radially outward and radially inward engagement surfaces, wherein the ratio between said depth and said thickness is within the range 0,02 - 0,03, preferably around 0,027.
  • the flange has an outer diameter and the central annular recessed zone has a depth with respect to the radially outward and radially inward engagement surfaces, wherein the ratio between said depth and the outer diameter of the flange is between 0,001 - 0,002, preferably between 0,0015 and 0,0020, more preferably around 0,0017.
  • the bolts have a head which is arranged against the lower annular flange of the flange connection.
  • connection furthermore comprises washers arranged between the flange surface and the bolt heads and nuts, wherein the washer at the lower flange has a radial groove extending from the inner side of the washer to the outer side of the groove.
  • the radial groove may have a depth that corresponds to about half of the thickness of the washer.
  • the washer may have a thickness of about 8mm and the groove may have depth of about 4mm.
  • the radial groove, in the mounted state of the washer, preferably faces the flange surface.
  • the groove in the washer at the lower flange of the connection serves as a drainage for water/moist that for some reason has entered in the through bores. If the water would stay in the bores the bolts might get exposed too long to the moist and get corroded, whereby the risk of failure of the bolt increases. By draining the possible water from the bores through the groove this risk is reduced.
  • a flange connection to connect two tubular segments 1 and 2 of a power pylon.
  • a power pylon carries overhead power lines.
  • the tubular segments 1, 2 each have a tubular wall indicated by reference numerals 3, 4 respectively.
  • the tubular walls of the pylon may have an outer diameter of about 1,1 - 1,2 m at the location of the flanged connection.
  • the outer diameter D o (cf. Fig. 3 ) of the flanges corresponds to the outer diameter of the tubular walls
  • the upper tubular segment 1 has an upper flange 5, which is attached to the lower end of the upper tubular wall 3.
  • the flange 5 is attached to the tubular wall by welding and extends radially inwards therefrom.
  • the weld is indicated by reference numeral 7.
  • the lower tubular segment 2 has a lower flange 6, which is attached to the upper end of the lower tubular wall 4.
  • the flange 6 is attached to the tubular wall by welding and extends radially inwards therefrom.
  • the weld is indicated by reference numeral 8.
  • the flanges 5, 6 have an upstanding circumferential rim 19, at which the flange is welded to the tubular walls.
  • the rim 19 may have a height of about 25 mm. This rim 19 has the advantage that the welding heat is applied at some distance of the flanges 5, 6 whereby the effect of deformation, thermal tension and additional unevenness of the flanges 5, 6 is reduced.
  • the flanges 5 and 6 are identical.
  • the separate flange 5, 6 is shown in Fig. 3 and 4 .
  • Identical flanges 5, 6 results in that all flanges can be made by the same forming and machining process and no mistakes can be made regarding which flange has to be welded to which tubular wall 3, 4.
  • the flanges 5, 6 may have thickness t ⁇ 30 mm, for example 60 - 80 mm.
  • the flanges 5, 6 may have an inner diameter D i of 700 - 800 mm.
  • the flanges 5, 6 are provided with through bores 9 distributed over the circumference of the flange, as can be seen in Figs 3 and 4 .
  • a washer 13 is arranged between the nut 11 and the upper flange. Also between the bolt head 10A and the lower flange a washer 12 is arranged. The lower washer 12 is shown separately in Fig. 6 .
  • the washer 12 has an upper surface 12A in which a radial groove 14 is formed. When mounted the upper surface 12A is facing the flange 6.
  • the radial groove 14 forms with the flange surface a channel that communicates with the bore 9. This has as an advantage that if moist/water somehow ends up in the bore 9, it will be able to drain at the lower side from the bore 9 through the formed channel. In this way a retention of water in the bores 9, which is potentially detrimental for the bolt 10, is prevented.
  • the washer 12 may have a thickness of about 8mm and the groove 14 may have a depth of about 4mm.
  • the opposing annular flanges 5, 6 each have an end face 15, which faces the end face 15 of the other one of the flanges 5, 6.
  • the end face 15 has a central annular recessed zone 16 that extends circumferentially.
  • the annular recessed zone 16 is machined in said end face 15.
  • the central annular recessed zone 16 is flanked by a radially outward engagement surface 17 and a radially inward engagement surface 18.
  • the radially outward engagement surface 17 and radially inward engagement surface 18 form the interface with the same surfaces 17, 18 of the opposing flange 5, 6 when the flanges 5, 6 are clamped together (cf. Fig. 2 ). These surfaces 17, 18 are machined such that they each form an even plane.
  • the radially inward engagement surface 18 may be a little recessed with respect to the outward engagement surface 17.
  • the central annular zone 16 has a depth d of about 2mm with regard to the outer and inner engagement surfaces 17, 18.
  • the total flange width Wt may be about 185 mm.
  • the width W cz of the recessed annular zone 16 may be about 130mm.
  • the width W eso , W esi , of the engagement surfaces 17, 18 may be 25-30mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Lining And Supports For Tunnels (AREA)
EP17159607.5A 2016-03-15 2017-03-07 Power pylon with flange connected tubular segments Revoked EP3219876B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19172737.9A EP3591143B1 (en) 2016-03-15 2017-03-07 Power pylon with flange connected tubular segments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2016438A NL2016438B1 (en) 2016-03-15 2016-03-15 Power pylon with flange connected tubular segments.

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP19172737.9A Division EP3591143B1 (en) 2016-03-15 2017-03-07 Power pylon with flange connected tubular segments

Publications (2)

Publication Number Publication Date
EP3219876A1 EP3219876A1 (en) 2017-09-20
EP3219876B1 true EP3219876B1 (en) 2019-05-08

Family

ID=55949043

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17159607.5A Revoked EP3219876B1 (en) 2016-03-15 2017-03-07 Power pylon with flange connected tubular segments
EP19172737.9A Active EP3591143B1 (en) 2016-03-15 2017-03-07 Power pylon with flange connected tubular segments

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19172737.9A Active EP3591143B1 (en) 2016-03-15 2017-03-07 Power pylon with flange connected tubular segments

Country Status (4)

Country Link
EP (2) EP3219876B1 (da)
DK (1) DK3219876T3 (da)
NL (1) NL2016438B1 (da)
PT (1) PT3219876T (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108180117B (zh) * 2018-01-09 2023-10-31 重庆大学 防腐蚀海上风电塔筒组合结构
NO345662B1 (en) 2018-11-02 2021-06-07 Tp Products As A flange element for a flange connection, a flange connection for a tower structure and a tower structure comprising such a flange connection.
DE102019218358A1 (de) * 2019-11-27 2021-05-27 Thyssenkrupp Steel Europe Ag Gitterstruktur für einen Turm einer Windenergieanlage und Turm einer Windenergieanlage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1146274A2 (de) 2000-04-12 2001-10-17 August Friedberg GmbH Flanschsystem mit Korrosionsschutz
US20040112002A1 (en) 2001-03-23 2004-06-17 Aloys Wobben Connecting flange for tubular components

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10152018A1 (de) * 2001-10-22 2003-04-30 Gen Electric Bauelementanordnung
DE10223429C1 (de) 2002-05-25 2003-05-28 Aloys Wobben Flanschverbindung
US8322757B2 (en) * 2007-01-26 2012-12-04 Inner Mongolia Golden Ocean New Energy Technology Corporation Co., Ltd. Coupling flange assembly for connecting steel pipes
US8490337B2 (en) * 2009-06-09 2013-07-23 Thomas Nott Word, III Structural flange connection system and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1146274A2 (de) 2000-04-12 2001-10-17 August Friedberg GmbH Flanschsystem mit Korrosionsschutz
US20040112002A1 (en) 2001-03-23 2004-06-17 Aloys Wobben Connecting flange for tubular components

Non-Patent Citations (13)

* Cited by examiner, † Cited by third party
Title
"Statically loaded bolts in dynamically loaded connection", VIDEO TU DELFT, 1981
ANONYMUS: "The Wintrack pylon - An innovative solution for new high-voltage lines", TENNET, 1 January 2012 (2012-01-01), XP055682478
EXCERPTS FROM ROYAL HASKONING'S REPORT, 22 September 2015 (2015-09-22), XP055683387
FELDMANN, ET AL: "Zum last-verformungsverhalten von Schrauben in vorgespannten Ringflanschverbindungen mut überbrükten Klauffungen im Himblick aufdie Ermüdigungsvorhersage", STAHLBAU, vol. 80, no. 1, 1 January 2011 (2011-01-01), pages 21 - 29, XP055683383
H. SCHMIDT, ET AL: "Zum lastostatischen Tragverhalten exzentrisch gezogener L- Stöße mit voorgespannten Schrauben", STAHLBAU, vol. 66, 1 January 1997 (1997-01-01), XP055682481
H.A.I.A. DE GROOT , ALTERNATIEF ONTWERP VOOR HOOGSPANNINGSMAST 'WINTRACK'IN BETON (AFSTUDEERVERSLAG, January 2013 (2013-01-01)
H.A.I.A. DE GROOT, ALTERNATIEF ONTWERP VOOR HOOGSPANNINGSMAST 'WINTRACK' IN BETON (BIJLAGE BIJ AFSTUDEERVERSLAG, January 2013 (2013-01-01)
J. WARDENIER ET AL.: "Hollow Sections in Structural Applications", 2010, XP055682471
L.P. BOUWMAN: "Vermoeiing van bouten en van geboute verbindingen", STAALBOUWKUNDIG GENOOTSCHAP, January 1989 (1989-01-01)
M VELJKOVIC, ET AL: "Wind turbine tower design, erection and maintenance", WIND ENERGY SYSTEMS, OPTIMISING DESIGN AND CONSTRUCTION FOR SAFE AND RELIABLE OPERATION, 1 January 2011 (2011-01-01), pages 274 - 300, XP055683384
PRITCHARD: "Industrial Chimneys: a review of the current state of the art", PROC. INSTN CIV ENGRS STRUCTS & BLDGSM, vol. 116, no. Feb, 1 January 1996 (1996-01-01), pages 69 - 81, XP055683381
TENNET. YOUTUBE VIDEO, TENNET WINTRACK, 26 April 2010 (2010-04-26), Retrieved from the Internet <URL:https://www.youtube.com/watch?v=ryl QlfcKtm8>
TENNET. YOUTUBE VIDEO, WINTRACK, 3 March 2011 (2011-03-03), Retrieved from the Internet <URL:https://www.voutube.com/watch?v=iodh6xFDpqc>

Also Published As

Publication number Publication date
EP3219876A1 (en) 2017-09-20
EP3591143B1 (en) 2023-11-22
EP3591143A2 (en) 2020-01-08
EP3591143C0 (en) 2023-11-22
EP3591143A3 (en) 2020-03-25
NL2016438B1 (en) 2017-10-02
DK3219876T3 (da) 2019-07-08
PT3219876T (pt) 2019-09-20

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