Production method of fuel nozzle in gas turbine
A technology of a fuel nozzle and a production method, which is applied to the production field of fuel nozzles in gas turbines, can solve the problems of high cost and long production cycle of fuel nozzles, achieve good application effects and shorten the preparation cycle.
Active Publication Date: 2021-01-22
SHANGHAI ELECTRICGROUP CORP
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Problems solved by technology
[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a method for producing fuel nozzles in gas turbines to solve the problems of long production cycle and high cost of fuel nozzles in gas turbines in the prior art
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[0028] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0029] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same time, terms such as "upper", "lo...
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Abstract
The invention provides a production method of a fuel nozzle in a gas turbine. The production method of the fuel nozzle in the gas turbine comprises the following steps that (1) a fuel nozzle is printed by adopting a selective laser melting technology, the central axial direction of the fuel nozzle is selected as a printing growth direction during printing, and the gas inlet surface of the fuel nozzle is used as a printing bottom surface; (2) heat treatment is conducted, wherein vacuum heat treatment is conducted on the printed fuel nozzle in the step (1); (3) sand blasting treatment is conducted on the fuel nozzle obtained after heat treatment; and (4) fluid polishing treatment is conducted on the fuel nozzle obtained after sand blasting. The production method of the fuel nozzle in the gasturbine solves the problems of size, surface roughness and the like in the preparation process of the fuel nozzle, shortens the preparation period, achieves and even exceeds the technical indexes ofa traditional process (such as precision casting), and has a good application effect.
Description
technical field [0001] The invention relates to the technical field of gas turbines, in particular to a method for producing fuel nozzles in gas turbines. Background technique [0002] Most of the existing gas turbine fuel nozzles have complex internal swirl structures to meet the needs of fuel atomization, and are generally manufactured by precision casting. However, the overly complex internal structure features make it difficult to open molds for investment casting nozzles, resulting in long production cycles, low yields, and high costs. Especially in the field of design and development of new nozzles, traditional investment casting processes cannot meet the requirements of design samples. Rapid preparation to speed up verification iteration requirements. [0003] As a typical metal 3D printing technology, laser selective melting technology eliminates the mold opening procedure in the molding process, significantly reduces the part preparation cycle and cost, improves th...
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Login to View More IPC IPC(8): F23R3/28
CPCF23R3/283
Inventor 张宏琦谈芦益普艳祥
Owner SHANGHAI ELECTRICGROUP CORP