Machining method for high-water-head water pump turbine blade disc
A technology of pump turbine and processing method, which is applied in the field of blisk processing, can solve the problems of space accessibility limitation, exceeding, and inability to meet the manufacturing requirements of large-scale high-head pump turbine runners, etc., achieve good accessibility and overcome easy deformation , The effect of saving manual workload
Inactive Publication Date: 2022-01-11
DONGFANG ELECTRIC MACHINERY
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Problems solved by technology
Due to the closed, narrow and long flow channel space, the traditional manufacturing method of the high head pump turbine runner is challenged, especially in manual operation scenarios such as assembly welding and weld scraping, the space accessibility is severely limited, and even exceeds the available Therefore, traditional processing and manufacturing methods can no longer meet the manufacturing requirements of such large-scale high-head water pump turbine runners
Method used
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[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0030] like Figure 1 ~ Figure 3 As shown, the high head water pump turbine blisk processing method of the present embodiment includes the following steps:
[0031] S1: The upper part 1 of the blisk and the lower part 2 of the blisk are respectively cast; the upper part 1 of the blisk includes the upper crown 3 and the upper sections of several blades 4 , and the lower part 2 of the blisk includes the lower ring 5 and the lower sections of several blades 4 . The present invention adopts the mode of 3D printing casting sand mold,...
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The invention belongs to the technical field of blade disc machining, and particularly relates to a machining method for a high-water-head water pump turbine blade disc. According to the technical scheme, the machining method for the high-water-head water pump turbine blade disc comprises the following steps that S1, the upper portion and the lower portion of the blade disc are cast, wherein the upper portion of the blade disc comprises an upper crown and upper sections of a plurality of blades, and the lower portion of the blade disc comprises a lower ring and lower sections of a plurality of blades; S2, numerical control machining is conducted on the upper portion and the lower portion of the blade disc; S3, the upper sections of the blades on the upper portion of the blade disc and the lower sections of the blades on the lower portion of the blade disc are welded; and S4, relief grinding is conducted on welding seams. According to the machining method for the high-water-head water pump turbine blade disc, machining is convenient, and the product quality is improved.
Description
technical field [0001] The invention belongs to the technical field of blisk processing, and in particular relates to a method for processing blisks of high-head water pump turbines. Background technique [0002] Pumped storage is a clean and efficient energy utilization method. Its main function is to stabilize the load of the power grid and play the role of energy storage, peak regulation, frequency regulation, and phase regulation. There is huge room for future development. The construction of pumped storage power stations in my country started relatively late, but due to the latecomer effect, the starting point is relatively high. The technology of several large pumped storage power stations built in recent years has reached the advanced level in the world. [0003] The runner of a large-scale high-head pump turbine is the core power device of a pumped storage unit, and its manufacturing quality determines the vibration frequency, hydraulic efficiency, cavitation perform...
Claims
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IPC IPC(8): B23P15/00F03B3/12
CPCB23P15/00F03B3/12Y02E10/20Y02P70/50
Inventor 刘军陈道全吴家奎乔杰王大伦冯涛胡章洪谢贤斌
Owner DONGFANG ELECTRIC MACHINERY