一种上下分体式机座
By dividing the base into upper and lower parts and connecting them with a symmetrical welding sequence and positioning grooves, the problem of ensuring concentricity and verticality during the welding process of large steam turbine generator bases was solved, achieving high-precision assembly and improving the structural strength and sealing of the base.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU JUNENG GENERATOR COROLLARY EQUIP
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-17
AI Technical Summary
During the segmented welding process of the upper and lower split frame of a large steam turbine generator, it is difficult to ensure the concentricity and perpendicularity accuracy of each ring plate, resulting in overall dimensional deviations, affecting electromagnetic performance and increasing the risk of operational failures.
The base is divided into upper and lower parts. The upper and lower bases are welded on the welding platform respectively, and a symmetrical welding sequence is adopted. They are connected by positioning grooves and sealing gaskets to ensure centering and concentricity. Support steel is used to improve structural strength and reduce deformation, and damping components are set to isolate vibration.
It improves the assembly accuracy and sealing of the frame, reduces welding deformation, ensures the centering and concentricity of the frame, and enhances the quality and operational reliability of the stator frame.
Smart Images
Figure CN224520818U_ABST
Abstract
Claims
1. A split frame, characterized in that: The machine includes a base body (1), which includes an upper base (2) and a lower base (3); the cross-sections of the upper base (2) and the lower base (3) are respectively set as semi-circular, and the openings of the upper base (2) and the lower base (3) are connected to each other to form an upper and lower split base; a positioning groove (27) is provided along the opening of the upper base (2), and the opening end of the lower base (3) extends into the positioning groove (27) and connects with the upper base (2).
2. The upper and lower split frame as claimed in claim 1, wherein: The positioning groove (27) is made of channel steel, the positioning groove (27) is set with the opening facing downward to the machine base (3), and a sealing gasket (28) is provided inside the positioning groove (27).
3. The upper and lower split frame as claimed in claim 2, wherein: The upper base (2) includes a set of parallel upper partition rings (21), and the lower base (3) includes a set of lower partition rings (31) corresponding to the upper partition rings (21). The upper partition rings (21) and the lower partition rings (31) are connected to form a ring. The set of upper partition rings (21) is connected by a set of connecting pipes (22). The connecting pipes (22) pass through the upper partition rings (21) and are arranged in an array along the outline of the upper partition rings (21). The lower partition rings (31) are connected by a set of support plates (32). The support plates (32) are arranged in an array along the outline of the lower partition rings (31). The upper partition rings (21) are connected to an upper cover plate (211) on their outer periphery. The lower partition rings (31) are provided with a base portion (311) on the side away from the upper partition rings (21). The lower partition rings (31) are connected to a lower cover plate (312) on their outer periphery. The base portion (311) is surrounded by the lower cover plate (312) to form a base.
4. The upper and lower split frame of claim 3, wherein: Each of the upper partition ring (21) and lower partition ring (31) has a first support steel (23) connected to both ends of its opening. A second support steel (24) is connected between the first support steels (23). The first support steels (23) and the second support steels (24) are arranged vertically. The first support steels (23) are connected to the middle of the upper partition ring (21) and the lower partition ring (31) through a third support steel (25). The first support steels (23), the second support steels (24) and the third support steels (25) are used as process auxiliary support components.
5. The upper and lower split frame of claim 3, wherein: An upper partition ring (21) has an upper end plate (26) at each end, and the upper end plate (26) at each end is connected by a first connecting plate (261) and the upper partition ring (21); a lower partition ring (31) has a lower end plate (33) at each end, and the lower end plate (33) is connected by a second connecting plate (331) and the lower partition ring (31); there are two or more lower end plates (33), and the two lower end plates (33) are connected by a second connecting plate (331).
6. The upper and lower split frame of claim 3, wherein: A damping element (4) is connected between the two lower spacer rings (31). The damping element (4) is connected to the stator core. The damping element (4) includes a spring plate (41) and a pad (42). The two ends of the spring plate (41) are respectively connected to the lower spacer rings (31). The pad (42) is connected to the side of the spring plate (41) near the center of the machine base body (1).
7. The upper and lower split frame of claim 6, wherein: The pad (42) is set in an arc shape corresponding to the stator core at one end facing the center of the machine base body (1).
8. The upper and lower split frame of claim 2, wherein: The sealing gasket (28) is made of silicone rubber.
9. The upper and lower split frame of claim 2, wherein: The lower base (3) is provided with lifting parts (5) on both sides, and the lifting parts (5) are provided with lifting holes (51). The lifting parts (5) are provided in pairs on the upper and lower sides of the side wall of the lower base (3).