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Method for preventing the corrosion of impeller-shaft assembly of turbomachine

A technology of shaft assembly and turbine, applied in parts of pumping devices for elastic fluid, engine components, supporting components of blades, etc., can solve problems such as pitting corrosion damage of stainless steel

Active Publication Date: 2017-03-22
NUOVO PIGNONE TECH SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, if this environment includes chlorine, stainless steel will be affected by pitting corrosion damage

Method used

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  • Method for preventing the corrosion of impeller-shaft assembly of turbomachine
  • Method for preventing the corrosion of impeller-shaft assembly of turbomachine
  • Method for preventing the corrosion of impeller-shaft assembly of turbomachine

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Embodiment Construction

[0011] The following description of the exemplary embodiments refers to the accompanying drawings. The same reference numbers in different drawings identify the same or similar elements. The following detailed description does not limit the invention. Rather, the scope of the invention is defined by the appended claims.

[0012] Reference throughout the specification to "one embodiment," or "an embodiment," means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the disclosed subject matter. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0013] Accordingly, a method for preventing corrosion of a wheel-shaft assembly of...

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Abstract

A method for preventing corrosion of an impeller-shaft assembly of a turbomachine comprises the steps of assembling an impeller (2) on a shaft (3) in order to define an impeller-shaft assembly (1); plating the assembly (1) by inserting said assembly (1) into a plating bath (12); coating at least a first predefined surface (5) on the impeller (2) and a second predefined surface (7) on the shaft (3), the coating step is performed by spraying the predefined surfaces (5, 7).

Description

technical field [0001] The present invention relates to a method for preventing corrosion of a wheel-shaft assembly of a turbomachine. The method of the invention can advantageously be used to prevent corrosion in components of subsea or onshore or offshore turbines. In the following disclosure, specific reference will be made to centrifugal compressors for ease of illustration only, without however intending any limitation on the applicability of the invention. Background technique [0002] Materials such as carbon steel, low alloy steel, and stainless steel are commonly used when constructing components that operate in subsea or onshore or offshore environments. Carbon and low alloy steels will be affected by corrosion damage if the environment includes wet carbon dioxide (CO2) and / or wet hydrogen sulfide. Also, if this environment includes chlorine, stainless steel will be subject to pitting corrosion damage. [0003] Methods for preventing corrosion of impeller-shaft ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/34F01D25/00F04D29/02F04D29/26
CPCF01D5/34F01D25/007F04D29/023F04D29/266F05D2230/90F05D2260/95F05D2300/611F05D2300/171F05D2300/132F05D2300/17F05D2300/16C23C18/32C23F11/00F01D5/02F01D25/00F04D29/02F04D29/26B05D1/12C23C4/12C23C18/1633C25D3/04C25D3/12F04D29/043F04D29/053F04D29/2294F04D29/28F04D29/624F04D29/628
Inventor F.卡普奇尼S.斯特拉梅尔M.罗马内利M.安塞尔米R.保勒蒂A.班迪尼
Owner NUOVO PIGNONE TECH SRL