WO2022143246A1 - Éolienne, structure d'ouverture de porte de tour ronde d'éolienne et son procédé de fabrication - Google Patents

Éolienne, structure d'ouverture de porte de tour ronde d'éolienne et son procédé de fabrication Download PDF

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Publication number
WO2022143246A1
WO2022143246A1 PCT/CN2021/139555 CN2021139555W WO2022143246A1 WO 2022143246 A1 WO2022143246 A1 WO 2022143246A1 CN 2021139555 W CN2021139555 W CN 2021139555W WO 2022143246 A1 WO2022143246 A1 WO 2022143246A1
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WIPO (PCT)
Prior art keywords
steel plate
section steel
arc section
arc
tower
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Application number
PCT/CN2021/139555
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English (en)
Chinese (zh)
Inventor
周昳鸣
李卫东
刘鑫
闫姝
张波
卢坤鹏
邱旭
马文冠
吕晓静
曾崇济
李新凯
尹铁男
Original Assignee
中国华能集团清洁能源技术研究院有限公司
华能海上风电科学技术研究有限公司
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Application filed by 中国华能集团清洁能源技术研究院有限公司, 华能海上风电科学技术研究有限公司 filed Critical 中国华能集团清洁能源技术研究院有限公司
Publication of WO2022143246A1 publication Critical patent/WO2022143246A1/fr

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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
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention belongs to the technical field of wind power generation steel tower design, and particularly relates to a wind turbine, a wind turbine circular tower door structure and a manufacturing method.
  • the door opening at the bottom of the wind turbine tower is the main passage for operation and maintenance personnel and electrical equipment in the tower to enter and exit the wind turbine (refer to Figure 1).
  • a local stress increase occurs near the tower door opening.
  • the phenomenon of stress concentration can easily lead to fatigue cracks in the steel, thus making the entire tower structure fail.
  • the common practice in the wind power industry is to thicken the main wall thickness of the bottom section of the tower where the door opening is located to meet the requirements of fatigue strength.
  • the height of the door opening of the wind power tower is high and the diameter of the bottom section is large, increasing the wall thickness makes the quality of the bottom section of the tower sharply improve and increases the cost.
  • the height of the door opening in the bottom section is about 5m
  • the height of the tower in the bottom section is 10m
  • the diameter is 7m.
  • the tower wall thickness is 20mm, and the bottom section tower mass is 24.10t; if the bottom section has door openings, the tower wall thickness needs to be thickened to 50mm. At that time, the mass of the tower at the bottom section was 59.99t, which was an increase of 35.89t compared with the bottom section without openings.
  • one method is to optimize the shape of the door opening as much as possible and reduce the stress concentration factor to achieve the purpose of reducing the quality of the tower. Since the shape of the door opening is generally a standardized design, if a new design is adopted, the process cost may be increased, resulting in an increase in the cost of the tower per unit weight, and finally it cannot really reduce the cost. Therefore, another method is to only use the wall thickness value of the door opening near the door opening and the place where the stress concentration phenomenon is more obvious; for the part far from the door opening and the stress concentration phenomenon is not obvious, the wall thickness value of the door opening is still used.
  • the present invention provides a wind turbine, a doorway structure and a manufacturing method of a circular tower of the wind turbine, which can not only satisfy the fatigue strength near the doorway, but also reduce the wall thickness of the tower and the quality of the tower. .
  • the technical scheme adopted in the present invention is: a door structure of a circular tower of a wind turbine, the bottom section of the tower includes a part of the arc section steel plate: a first arc section steel plate, two second arc section sections Steel plates, two third arc-segment steel plates and a fourth arc-segment steel plate;
  • the door opening is opened on the first arc-segment steel plate, the two second arc-segment plates are symmetrical about the vertical centerline of the door opening, and the two third arc-segment plates are
  • the circular arc section steel plate is symmetrical about the vertical center line of the door opening, and the two adjacent circular arc section steel plates are welded.
  • the thickness of the steel plate in the three arc segments, the thickness of the steel plate in the third arc segment is greater than that in the fourth arc segment.
  • the thicker steel plate shall be trimmed with a slope of not more than 1:4 along the welding seam.
  • the thicknesses of the first circular arc section steel plate, the second circular arc section steel plate and the third circular arc section steel plate gradually change along their respective lateral directions.
  • the widths of the first circular arc section steel plate, the second circular arc section steel plate and the third circular arc section steel plate decrease in turn.
  • the central angles corresponding to the first circular arc section steel plate, the second circular arc section steel plate and the third circular arc section steel plate are respectively 2 ⁇ 1 , ⁇ 2 and ⁇ 3 ; ⁇ 1 is 30° ⁇ 60°, and ⁇ 2 is 10° ⁇ 30°, ⁇ 3 is 10° ⁇ 30°; the thicknesses of the first circular arc section steel plate, the second circular arc section steel plate, the third circular arc section steel plate and the fourth arc section steel plate are t 1 , t 2 , and t 3 respectively and t 4 ; t 1 is 30mm-70mm, t 2 is 20mm-60mm, t 3 is 15mm-50mm, and t 4 is 10mm-30mm.
  • the width of the door opening is 900mm-1400mm, and the height is 2.6m-3.2m.
  • the central angle corresponding to the steel plate of the fourth arc segment is 180°.
  • the door opening is in the shape of a racetrack.
  • the first circular arc section steel plate, the second circular arc section steel plate, the third circular arc section steel plate and the fourth arc section steel plate are welded, the first circular arc section steel plate, the second circular arc section steel plate, and the fourth arc section steel plate are welded.
  • One arc section steel plate and two second arc section steel plates then weld the second arc section steel plate and the third arc section steel plate, and finally weld the fourth arc section steel plate and the third arc section steel plate; and the welding is completed heat treatment immediately after.
  • a wind turbine generator set, the structure of the tower door opening adopts the circular tower door opening structure of the wind turbine generator set of the present invention.
  • the present invention has at least the following beneficial effects: welding two adjacent arc-segment steel plates, the thickness of the first arc-segment steel plate is greater than that of the second arc-segment steel plate, and the thickness of the second arc-segment steel plate is greater than that of the second arc-segment steel plate.
  • the thickness of the steel plate in the third arc section is larger than that of the steel plate in the third arc section, and the thickness of the steel plate in the third arc section is larger than that in the fourth arc section.
  • the strength of the bottom section of the tower meets the design requirements.
  • the first arc section steel plate, the second arc section steel plate, the third arc section steel plate and the fourth arc section steel plate are welded in sequence, and heat treatment is performed to achieve stability. Reliable production.
  • Figure 1 Structure diagram of the bottom section of the steel tower of a traditional wind turbine
  • Figure 2 is a schematic diagram of the stress concentration phenomenon near the tower door opening
  • Figure 3 is a structural diagram of the bottom section of the steel tower of the new wind turbine
  • Figure 4 is a schematic diagram of the transition of steel plate grooves of different thicknesses of the steel tower of the new wind turbine.
  • the bottom tower 10 includes six parts of arc-segment steel plates: a first arc-segment steel plate 11 , two second arc-segment steel plates 12 , Two third arc-segment steel plates 13 and a fourth arc-segment steel plate 14; the door opening is opened on the first arc-segment steel plate 11, and the two second arc-segment steel plates 12 are symmetrical about the vertical centerline of the door opening.
  • the third circular arc section steel plate 13 is symmetrical about the vertical center line of the doorway, and two adjacent circular arc section steel plates are welded.
  • the thickness of the first circular arc section steel plate 11 is greater than that of the second circular arc section steel plate 12,
  • the thickness of the steel plate 12 is greater than the thickness of the third arc segment steel plate 13, and the thickness of the third arc segment steel plate 13 is greater than that of the fourth arc segment steel plate 14;
  • the shape of the door opening is a racetrack shape;
  • the central angle corresponding to the fourth arc segment steel plate 14 is 180°.
  • the thicker steel plate shall be trimmed with a slope of not more than 1:4 along the welding seam.
  • the thicknesses of the first circular arc segment steel plate 11 , the second circular arc segment steel plate 12 and the third circular arc segment steel plate 13 gradually change along their respective lateral directions.
  • the widths of the first circular arc section steel plate 11 , the second circular arc section steel plate 12 and the third circular arc section steel plate 13 decrease sequentially.
  • the central angles corresponding to the first circular arc section steel plate 11, the second circular arc section steel plate 12 and the third circular arc section steel plate 13 are respectively 2 ⁇ 1 , ⁇ 2 and ⁇ 3 ; ⁇ 1 is 30° to 60°, and ⁇ 2 is 10° ⁇ 30°, ⁇ 3 is 10° ⁇ 30°; the thicknesses of the first circular arc section steel plate 11, the second circular arc section steel plate 12, the third circular arc section steel plate 13 and the fourth arc section steel plate 14 are respectively t 1 , t 2 , t 3 and t 4 ; t 1 is 30mm-70mm, t 2 is 20mm-60mm, t 3 is 15mm-50mm, and t 4 is 10mm-30mm.
  • the width of the door opening is 900mm-1400mm, and the height is 2.6m-3.2m.
  • the first arc section steel plate 11 , the second arc section steel plate 12 , the third arc section steel plate 13 and the fourth arc section steel plate 14 are welded during welding. , first weld the first arc section steel plate 11 and the two second arc section steel plates 12; then weld the second arc section steel plate 12 and the third arc section steel plate 13, and finally weld the fourth arc section steel plate 14 with the third arc section steel plate 14
  • the arc section steel plate 13 is welded; and heat treatment is performed immediately after the welding is completed.
  • the present invention can also be implemented with a wind turbine, and the structure of the door opening of the wind power generation tower adopts the circular tower door structure of the wind turbine according to the present invention.
  • the present invention proposes a structure and a manufacturing method which can satisfy the fatigue strength near the door opening under the existing technological level, and can reduce the wall thickness of the tower and the quality of the tower.
  • the structure of the bottom section of the tower, the tower section where the doorway of the offshore wind turbine tower is located includes a variety of steel plates with different thicknesses.
  • the tower at the largest point towards the door opening is symmetrical with its center plane, and is divided into several arc segments, each arc segment corresponds to a central angle. Refer to Figure 3 for details.
  • the variable thickness part of each arc segment meets the following requirements:
  • the bottom section tower 10 is divided into 6 parts: the arc section steel plate 14, the first arc section Steel plate 11, two third arc-segment steel plates 13 that are symmetrical about the centerline of the doorway, and two second arc-segment steel plates 12 that are symmetrical about the centerline of the doorway; the first arc-segment steel plate 11, where t 1 represents the The thickness of the first arc segment steel plate 11 of the variable thickness portion; t 2 represents the thickness of the second arc segment steel plate 12 of the variable thickness portion; t 3 represents the thickness of the third arc segment steel plate 13 of the variable thickness portion thickness; t 4 represents the thickness of the fourth circular arc segment steel plate 14 of the variable thickness portion; 2 ⁇ 1 represents the central angle angle corresponding to the circular arc segment steel plate 11 ; ⁇ 2 represents the circle center corresponding to the circular arc segment steel plate 12 ;
  • the tower section where the door opening of the offshore wind turbine tower is located includes a variety of steel plates with different thicknesses, and the variable thickness part meets the following requirements:
  • t 1 , t 2 , t 3 , t 4 and ⁇ 1 , ⁇ 2 , ⁇ 3 are respectively:
  • the wall thickness of the tower can be reduced and the quality of the tower can be reduced.
  • Table 2 shows that the design result of opening the door opening given by the exemplary embodiment of the present invention is compared with the design result given by the traditional opening opening design.
  • the traditional design method for opening door openings has 1 longitudinal weld;
  • the bottom section process method according to the present invention has 6 longitudinal welds, corresponding to the first arc section 11, the second arc section steel plate, the third arc section In the circular arc section steel plate and the fourth circular arc section steel plate, when the steel plates of different wall thicknesses are butted between the adjacent circular arc section steel plates, the welding seam of the circular arc section steel plates of different thicknesses smoothly transitions with a slope not greater than 1:4 . Under the premise of not significantly increasing the complexity of the process, it can not only meet the fatigue strength near the door opening, but also reduce the wall thickness of the tower and reduce the quality of the tower.
  • Using the multi-arc section variable-thickness welding process of the wind turbine of the present invention can effectively reduce the weight of the tower and reduce the manufacturing cost.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention concerne une éolienne, une structure d'ouverture de porte de tour ronde d'une éolienne et son procédé de fabrication. Une section de tour inférieure de la structure d'ouverture de porte de tour ronde d'une éolienne comprend six parties de plaques en acier à section arquée : une première plaque en acier à section arquée, deux secondes plaques en acier à section arquée, deux troisièmes plaques en acier à section arquée et une quatrième plaque en acier à section arquée ; une ouverture de porte est disposée dans la première plaque en acier à section arquée, les deux secondes plaques en acier à section arquée sont symétriques autour d'une ligne centrale verticale de l'ouverture de porte, les deux troisièmes plaques en acier à section arquée sont symétriques autour de la ligne centrale verticale de l'ouverture de porte, toutes les deux plaques en acier à section arquée adjacentes sont soudées l'une à l'autre, la première plaque en acier à section arquée présente une épaisseur supérieure à chaque seconde plaque en acier à section arquée, chaque seconde plaque en acier à section arquée présente une épaisseur supérieure à chaque troisième plaque en acier à section arquée, et chaque troisième plaque en acier à section arquée présente une épaisseur supérieure à chaque quatrième plaque en acier à section arquée. L'usinage peut être réalisé au niveau de l'état de la technique sans augmenter de manière évidente la complexité d'un procédé, la résistance à la fatigue à proximité d'une ouverture de porte est satisfaite, l'épaisseur de paroi d'une tour est réduite, et la masse de la tour est réduite ; et le coût de fabrication de la tour d'éolienne est réduit.
PCT/CN2021/139555 2020-12-30 2021-12-20 Éolienne, structure d'ouverture de porte de tour ronde d'éolienne et son procédé de fabrication WO2022143246A1 (fr)

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CN202011629598.2 2020-12-30
CN202011629598.2A CN112648148A (zh) 2020-12-30 2020-12-30 一种风电机组、风电机组圆形塔架门洞结构及制造方法

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CN112648148A (zh) * 2020-12-30 2021-04-13 华能国际电力股份有限公司江苏清洁能源分公司 一种风电机组、风电机组圆形塔架门洞结构及制造方法

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Publication number Priority date Publication date Assignee Title
EP2562419A1 (fr) * 2011-08-26 2013-02-27 Nordex Energy GmbH Tour pour une éolienne
CN109973321A (zh) * 2017-12-27 2019-07-05 江苏金风科技有限公司 风力发电机组的塔架门洞、塔架及风力发电机组
CN207777089U (zh) * 2017-12-29 2018-08-28 新疆金风科技股份有限公司 塔筒段、塔筒和风力发电机组
CN109869282A (zh) * 2019-03-14 2019-06-11 北京金风科创风电设备有限公司 塔筒段、塔筒段的制造方法、塔筒和风力发电机组
CN112648148A (zh) * 2020-12-30 2021-04-13 华能国际电力股份有限公司江苏清洁能源分公司 一种风电机组、风电机组圆形塔架门洞结构及制造方法
CN214035963U (zh) * 2020-12-30 2021-08-24 华能国际电力股份有限公司江苏清洁能源分公司 一种风电机组及风电机组圆形塔架门洞结构

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