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Method for installing turbine high-pressure double-layer cylinder locating keys

A positioning key and steam turbine technology, applied to mechanical equipment, engine components, machines/engines, etc., can solve problems such as key installation difficulties, achieve the effects of saving assembly time, improving assembly quality, and reducing scrap rate

Active Publication Date: 2013-10-16
HARBIN TURBINE
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of difficulty in installing keys between the two-layer cylinders of the existing steam turbine, and provide a method for installing the positioning keys of the high-pressure double-layer cylinders of the steam turbine

Method used

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  • Method for installing turbine high-pressure double-layer cylinder locating keys
  • Method for installing turbine high-pressure double-layer cylinder locating keys
  • Method for installing turbine high-pressure double-layer cylinder locating keys

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine Figure 1 to Figure 5 , this embodiment is a method for installing the positioning key of the high-pressure double-layer cylinder of a steam turbine, which is specifically completed according to the following steps:

[0017] 1. Install the lower half positioning key: Before installing the upper half cylinder of the high-pressure inner cylinder and the upper half cylinder of the high-pressure outer cylinder, put the lower half cylinder of the high-pressure inner cylinder into the lower half cylinder of the high-pressure outer cylinder, and adjust the lower half cylinder of the high-pressure inner cylinder With the axial position of the lower half of the high-pressure outer cylinder, determine the installation position of the lower half of the positioning key, and then install the lower half of the positioning key to the installation position of the lower half of the positioning key on the inner side of the lower half of the high-p...

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Abstract

The invention provides a method for installing turbine high-pressure double-layer cylinder locating keys, relates to the assembly of turbine high-pressure cylinders, and belongs to the field of turbine installation. The method aims to solve the problem that key installation between double layers of cylinders of a turbine in the prior art is difficult. The method includes the steps of step 1, installing lower half locating keys, step 2, determining measurement values, step 3, preparing locating sample plates, and step 4, installing upper half locating keys. Thus, installation of the turbine high-pressure double-layer cylinder locating keys is completed. The method for installing the turbine high-pressure double-layer cylinder locating keys has the advantages of improving unit assembly quality, reducing rejection rates, and saving assembly time. The method for installing the turbine high-pressure double-layer cylinder locating keys is applied to installation of the turbine high-pressure double-layer cylinder locating keys.

Description

technical field [0001] The invention relates to the assembly of a steam turbine high-pressure cylinder and belongs to the field of steam turbine installation. Background technique [0002] Most of the high-pressure cylinders of steam turbines have a double-layer cylinder structure. The connection and positioning of the cylinders uses positioning keys and keyways (convex and concave keys). The installation and positioning of the inner cylinder in the outer cylinder requires higher requirements. The installation method of the positioning key is generally to use the spot welding key first and then process the fastening bolt on the key. However, some cylinder positioning keys are hidden (especially at the upper half of the cylinder), and the space between the inner and outer cylinders is narrow, so personnel and equipment cannot enter and cannot spot-weld the positioning keys. The installation here is relatively blind, the scrap rate is high, and the assembly efficiency is low....

Claims

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Application Information

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IPC IPC(8): F01D25/30
Inventor 刘滨宣利红沈洪曲国丽张驰吴伟利罗小明
Owner HARBIN TURBINE
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