EP3591143B1 - Pylône de puissance ayant des segments tubulaires fixés par une bride - Google Patents

Pylône de puissance ayant des segments tubulaires fixés par une bride Download PDF

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Publication number
EP3591143B1
EP3591143B1 EP19172737.9A EP19172737A EP3591143B1 EP 3591143 B1 EP3591143 B1 EP 3591143B1 EP 19172737 A EP19172737 A EP 19172737A EP 3591143 B1 EP3591143 B1 EP 3591143B1
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EP
European Patent Office
Prior art keywords
flange
annular
flanges
face
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.)
Active
Application number
EP19172737.9A
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German (de)
English (en)
Other versions
EP3591143C0 (fr
EP3591143A2 (fr
EP3591143A3 (fr
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
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VDL Groep BV
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Publication date
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Application filed by VDL Groep BV filed Critical VDL Groep BV
Publication of EP3591143A2 publication Critical patent/EP3591143A2/fr
Publication of EP3591143A3 publication Critical patent/EP3591143A3/fr
Application granted granted Critical
Publication of EP3591143B1 publication Critical patent/EP3591143B1/fr
Publication of EP3591143C0 publication Critical patent/EP3591143C0/fr
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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 field of the invention relates to an annular flange according to the preamble of claim 1.
  • Wintrack pylon An example of a power 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 tubulars 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 aranged 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).
  • 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 2010/0307097 describes a flange connection for wind turbines.
  • a mechanical bond is formed between the flanges of the flange connection which are bolted together.
  • the mechanical bond may be formed by providing a ring groove in the face of the flanges and placing a ring gasket in the opposing grooves.
  • a groove may be provided in the face of one flange and a mating protrusion on the face of the other flange.
  • the mechanical bond then comprisies nesting the mating protrusion within the groove.
  • a series of apertures is formed in the flanges and the mechanical bond between the flanges is formed by placing pins in the apertures of the opposing flanges.
  • 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 central 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.
  • annular flange according to claim 1.
  • 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 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.
  • both of the opposing annular flanges have an annular recessed zone that is machined in the end face.
  • 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 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 an 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 of the power pylon 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)

Claims (8)

  1. Bride annulaire destinée à être soudée à un segment tubulaire d'un pylône électrique, ladite bride annulaire comprenant une face d'extrémité (15) destinée à faire face à une face d'extrémité (15) d'une bride (5,6) opposée, la bride annulaire (5,6) présentant des alésages traversants (9) répartis sur un cercle, dans laquelle la face d'extrémité (15) présente une zone annulaire centrale en retrait (16), ladite zone annulaire centrale en retrait (16) étant flanquée d'une surface d'engagement (17) extérieure radialement et d'une surface d'engagement (18) intérieure radialement qui forment l'interface avec la bride (5, 6) opposée,
    caractérisé en ce que la zone annulaire centrale en retrait (16) est usinée dans ladite face d'extrémité (15), et en ce que les surfaces d'engagement (17, 18) sont usinées de manière telle qu'elles forment chacune un plan régulier, dans laquelle la surface d'engagement (18) intérieure radialement est un peu en retrait par rapport à la surface d'engagement (17) extérieure.
  2. Bride annulaire selon la revendication 1, dans laquelle la zone annulaire centrale en retrait (16) a une largeur (Wcz) comprise entre 70% et 75%, de préférence environ 73%, de la largeur (Wt) de la face d'extrémité de la bride annulaire.
  3. Bride annulaire selon l'une quelconque des revendications précédentes, dans laquelle la surface d'engagement (17) extérieure radialement et la surface d'engagement (18) intérieure radialement ont sensiblement la même largeur.
  4. Bride annulaire selon l'une quelconque des revendications précédentes, dans laquelle la bride (5, 6) a une épaisseur (t) et la zone annulaire centrale en retrait (16) a une profondeur (d) par rapport aux surfaces d'engagement extérieure et intérieure radialement, dans laquelle le rapport (d/t) entre ladite profondeur (d) et ladite épaisseur (t) est compris dans la plage allant de 0,02 à 0,03, et est de préférence d'environ 0,027.
  5. Bride annulaire selon l'une quelconque des revendications précédentes, dans laquelle la bride (5, 6) a un diamètre extérieur (Do) et la zone annulaire centrale en retrait (16) a une profondeur (d) par rapport aux surfaces d'engagement extérieure et intérieure radialement (17, 18), dans laquelle le rapport (d/Do) entre ladite profondeur (d) et le diamètre extérieur (Do) de la bride (5, 6) est compris entre 0,001 et 0,002, de préférence entre 0,0015 et 0,0020, plus préférablement autour de 0,0017.
  6. Raccordement à bride annulaire destinée à interconnecter des segments tubulaires d'un pylône électrique, ledit raccordement à bride annulaire comprenant deux brides annulaires opposées (5, 6) qui sont respectivement adaptées à être attachées aux extrémités respectives des segments tubulaires, lesdites brides annulaires comprenant chacune une face d'extrémité (15) destinée à faire face à une face d'extrémité (15) de la bride (5,6) opposée,
    les brides annulaires (5,6) présentant chacune des alésages traversants (9) répartis sur un cercle, dans lequel les alésages traversants (9) des deux brides opposées (5, 6) sont adaptés pour être alignés, de manière à laisser passer des boulons (10) à travers lesdits alésages traversants (9) alignés, de manière à boulonner les brides opposées (5, 6) entre elles en utilisant des écrous (11) coopérant avec lesdits boulons,
    dans lequel au moins l'une des brides opposées (5, 6) est une bride selon l'une quelconques des revendications 1 à 5.
  7. Raccordement à bride annulaire selon la revendication 6, dans lequel chacune des deux brides annulaires opposées (5, 6) est une bride selon l'une quelconques des revendications 1 à 5.
  8. Pylône électrique comprenant au moins deux segments tubulaires qui sont interconnectés par un raccordement à bride annulaire selon la revendication 6 ou 7.
EP19172737.9A 2016-03-15 2017-03-07 Pylône de puissance ayant des segments tubulaires fixés par une bride Active EP3591143B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2016438A NL2016438B1 (en) 2016-03-15 2016-03-15 Power pylon with flange connected tubular segments.
EP17159607.5A EP3219876B1 (fr) 2016-03-15 2017-03-07 Tour avec des segments tubulaires raccordés à brides

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP17159607.5A Division EP3219876B1 (fr) 2016-03-15 2017-03-07 Tour avec des segments tubulaires raccordés à brides

Publications (4)

Publication Number Publication Date
EP3591143A2 EP3591143A2 (fr) 2020-01-08
EP3591143A3 EP3591143A3 (fr) 2020-03-25
EP3591143B1 true EP3591143B1 (fr) 2023-11-22
EP3591143C0 EP3591143C0 (fr) 2023-11-22

Family

ID=55949043

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19172737.9A Active EP3591143B1 (fr) 2016-03-15 2017-03-07 Pylône de puissance ayant des segments tubulaires fixés par une bride
EP17159607.5A Revoked EP3219876B1 (fr) 2016-03-15 2017-03-07 Tour avec des segments tubulaires raccordés à brides

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17159607.5A Revoked EP3219876B1 (fr) 2016-03-15 2017-03-07 Tour avec des segments tubulaires raccordés à brides

Country Status (4)

Country Link
EP (2) EP3591143B1 (fr)
DK (1) DK3219876T3 (fr)
NL (1) NL2016438B1 (fr)
PT (1) PT3219876T (fr)

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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20006750U1 (de) 2000-04-12 2000-06-29 August Friedberg Gmbh Flanschsystem mit Korrosionsschutz
US7096639B2 (en) * 2001-03-23 2006-08-29 Aloys Wobben Connecting flange for tubular components and wind turbine tower employing same
DE10152018A1 (de) * 2001-10-22 2003-04-30 Gen Electric Bauelementanordnung
DE10223429C1 (de) 2002-05-25 2003-05-28 Aloys Wobben Flanschverbindung
WO2008092350A1 (fr) * 2007-01-26 2008-08-07 Baotou Wind Power Science & Technology Co., Ltd. Of China Water Investment Group Ensemble bride, bride de raccord et procédé d'assemblage correspondant
US8490337B2 (en) * 2009-06-09 2013-07-23 Thomas Nott Word, III Structural flange connection system and method

Also Published As

Publication number Publication date
NL2016438B1 (en) 2017-10-02
PT3219876T (pt) 2019-09-20
DK3219876T3 (da) 2019-07-08
EP3591143C0 (fr) 2023-11-22
EP3591143A2 (fr) 2020-01-08
EP3591143A3 (fr) 2020-03-25
EP3219876A1 (fr) 2017-09-20
EP3219876B1 (fr) 2019-05-08

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