METHOD FOR MANUFACTURING TOWER TUBE SECTION, TOWER TUBE SECTION AND WIND TURBINE GENERATOR SYSTEM
Provided is a method for manufacturing tower tube section, including: forming a first tubular section and a second tubular section; joining the first tubular section and the second tubular section; forming a first notch on the first tubular section and a second notch on the second tubular section, where an opening is formed by the first tubular section and second tubular section, and a height of the first notch is less than a height of the first tubular section, and a height of the second notch is less than a height of the second tubular section; forming a door frame, where the door frame is embedded in the opening and is welded to the first tubular section and the second tubular section, and a door opening is provided to the door frame.
1 . A method for manufacturing tower tube section, comprising:
forming a first tubular section and a second tubular section;
joining the first tubular section and the second tubular section;
forming a first notch on the first tubular section and a second notch on the second tubular section, wherein an opening is formed by the first notch and the second notch, wherein a height of the first notch is less than a height of the first tubular section, and a height of the second notch is less than a height of the second tubular section; and
forming a door frame, wherein the door frame is embedded in the opening and is welded to the first tubular section and the second tubular section, and providing a door opening to the door frame.
2 . The method according to claim 1 , wherein the forming the door frame comprises:
foaling a first tube by rolling a steel plate;
performing a re-rounding process on the first tube; and
cutting the first tube along a longitudinal direction of the first tube to form at least one door frame.
3 . The method according to claim 1 , wherein the forming the door frame comprises:
forming two second tubes by respectively rolling two steel plates;
performing a re-rounding process on the two second tubes;
joining the two second tubes to form a third tube; and
cutting the third tube along a longitudinal direction of the third tube to form at least one door frame.
4 . The method according to claim 2 , wherein the forming the door frame comprises:
forming a joint section on a periphery of a body of the door frame after the door frame is formed, wherein a thickness of the joint section is less than a thickness of the body of the door frame and is greater than a thickness of the first tubular section and the second tubular section.
5 . The method according to claim 3 , the forming the door frame further comprising:
forming a joint section on a periphery of a body of the door frame after the door frame is formed, wherein a thickness of the joint section is less than a thickness of the body of the door frame and is greater than a thickness of the first tubular section and the second tubular section.
6 . The method according to claim 2 , wherein the door frame is a rectangular door frame or a trapezoid door frame; wherein the forming the door frame comprises:
forming a fillet transition between two adjacent edges of the door frame.
7 . The method according to claim 3 , wherein the door frame is a rectangular door frame or a trapezoid door frame; wherein the forming the door frame comprises:
forming a fillet transition between two adjacent edges of the door frame.
8 . The method according to claim 1 , wherein in the process of forming the first tubular section and the second tubular section, the method further comprise:
forming the first tubular section and the second tubular section by rolling steel plates, and performing a re-rounding process on the first tubular section and the second tubular section.
9 . A tower tube section, comprising:
a first tubular section, wherein the first tubular section comprise a first notch, and a height of the first notch is less than a height of the first tubular section;
a second tubular section, wherein the second tubular section is welded to the first tubular section, wherein the second tubular section comprises a second notch, and a height of the second notch is less than a height of the second tubular section, wherein an opening is formed by the first notch and the second notch; and
a door frame, wherein the door frame is embedded in the opening and is welded to the first tubular section and the second tubular section, and a door opening is provided to the door frame.
10 . The tower tube section according to claim 9 , wherein a thickness of the door frame is greater than a thickness of the first tubular section and the second tubular section, and an outer side of the door frame is protruded from an outer wall of the first tubular section and an outer wall of the second tubular section, and an inner side of the door frame is protruded from an inner wall of the first tubular section and an inner wall of the second tubular section.
11 . The tower tube section according to claim 9 , wherein the door frame comprises a body of the door frame and a joint section formed on an outer periphery of the body of the door frame; wherein a thickness of the joint section is less than a thickness of the body of the door frame, and is greater than a thickness of the first tubular section and the second tubular section.
12 . The tower tube section according to claim 11 , wherein the thickness of the joint section is uniformly thinned along a circumferential direction of the tower tube section.
13 . The tower tube section according to claim 9 , wherein the door frame is a one-piece structure.
14 . The tower tube section according to claim 9 , wherein the door frame is a rectangular door frame or a trapezoid door frame, and a fillet transition is formed between two adjacent edges of the door frame.
15 . A wind turbine generator system, wherein the wind turbine generator system comprises the tower tube section according to claim 9 .