一种用于风电主轴浇注系统的冒口补缩系统及浇注装置
By setting multiple inclined neck riser groups on the inner mold of the wind turbine main shaft, the problems of uneven performance and stress concentration on the outer surface of the wind turbine main shaft are solved, achieving higher performance consistency and extended service life, and improving the overall performance and production efficiency of the wind turbine main shaft.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 济南圣泉铸造材料有限公司
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the uneven performance of the outer surface of the wind turbine main shaft leads to a shortened service life, and the stress concentration on the outer surface affects the overall operational stability of the machine.
Multiple inclined neck riser groups are set on the inner mold of the wind turbine main shaft, with a spacing of 5 to 20 times the wall thickness of the main shaft body. The riser groups are staggered and have an inner diameter ratio of 1:(3 to 6). The included angle α1 is 25° to 38° and α2 is 30° to 40°, so as to achieve uniform feeding and reduce the stress on the inner surface.
It improves the consistency of the outer surface performance of the wind turbine main shaft, reduces the internal surface stress, extends the service life and improves production efficiency.
Smart Images
Figure CN224508391U_ABST
Abstract
Claims
1. A riser feeding system for a wind turbine main shaft casting system. The wind turbine main shaft casting system includes an inner mold, an outer mold, and a cavity formed between the inner mold and the outer mold. The cavity includes a main shaft body cavity corresponding to the main shaft body and a main shaft flange cavity corresponding to the main shaft flange. Its features are, The riser feeding system includes multiple riser groups; Each riser group includes a plurality of risers disposed in the inner mold along the circumferential direction of the inner mold, and the riser neck of each riser faces the main shaft body cavity; The riser groups are arranged along the axial direction of the inner mold.
2. The riser feeding system as described in claim 1, characterized in that, The spacing between the riser groups is 5 to 20 times the thickness of the main shaft body wall.
3. The riser feeding system as described in claim 1, characterized in that, The spacing between the risers in the riser group is 3 to 12 times the thickness of the main shaft body wall.
4. The riser feeding system as described in claim 1, characterized in that, The risers are staggered between at least two adjacent riser groups.
5. The riser feeding system as described in claim 1, characterized in that, The riser is a necked riser, which includes: Outlet cover; The riser neck; and, A riser seat, which is connected between the riser sleeve and the riser neck.
6. The riser feeding system as described in claim 5, characterized in that, The inner diameter r of the riser neck is 30~90mm.
7. The riser feeding system as described in claim 5 or 6, characterized in that, The ratio of the inner diameter r of the riser neck to the inner diameter R of the riser sleeve is 1:(3~6).
8. The riser feeding system as described in claim 5 or 6, characterized in that, The riser neck outlet side has a plane M. A plane N is defined by an axis perpendicular to the plane M and passing through the riser sleeve. The point where the plane N intersects with the inner surface of the riser sleeve defines a straight line L1 on the side closer to the plane N and a straight line L2 on the side farther from the plane M. The straight line L1 has an angle α1 with the plane M, and the straight line L2 has an angle α2 with the plane M. Where 25°≤angle α1≤38°, and / or 30°≤angle α2≤40°.
9. The riser feeding system as described in claim 8, characterized in that, 0°≤angle α2-angle α1≤8°.
10. A windmill main shaft casting device, characterized by, include: Wind turbine main shaft casting system; and, The riser feeding system according to any one of claims 1 to 9.