Processing method and device for adjusting blade and integral shroud by turboset

A regulating stage, steam turbine technology, applied in metal processing equipment, manufacturing tools, details of milling machine equipment, etc., can solve the problems of high size, shape and position accuracy, difficult processing and assembly, and achieve high processing accuracy and efficiency.

Active Publication Date: 2005-06-29
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The structural form of the blade is very different from the blades of previous units in my country, and the requirements for size and shape and position accuracy are high, which brings great difficulty to processing and assembly.

Method used

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  • Processing method and device for adjusting blade and integral shroud by turboset
  • Processing method and device for adjusting blade and integral shroud by turboset
  • Processing method and device for adjusting blade and integral shroud by turboset

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Embodiment Construction

[0043]First of all, it needs to be explained that the contours of the blade root I, blade body II and blade crown III of the regulating stage rotor blade of the 600MW unit are processed according to the conventional method to make them into Figure 4 Shape, the present invention carries out on this basis to the processing of leaf crown:

[0044] The processing method of leaf crown

[0045] See Figure 8, Figure 9 :Will Figure 4 The blade shown is clamped on the THX-6340 four-axis four-coordinate horizontal machine tool with a fixture. The plane is the positioning reference, so that the rotation center of the blade is consistent with the rotation center of the machine tool table. When designing the fixture, pay attention to the following points:

[0046] (1) In order to maintain the consistency of the direction of the part and the installation tool position with the machine tool coordinate system and the programming coordinate system, the fixture should ensure directional ...

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Abstract

The invention discloses a crown turbine set adjusting grade active fin crown processing technique and the processing device. Its features are: adopting special clamp, on the horizontal four coordinate lathes, with the surface milling method in the PRO / E software, picking the edge of the fin as control line, picking the outline of the clinch head as examining plane so to process the cylinder plane of the fin crown; process the clinch heat outline with the track milling method in the PRO / E software, processing roundabout contracting to the center; by using the rotor work bench on the lathe to let the fin crown step inclined plane perpendicular with the lathe main shaft, process the fin crown step inclined plane in plane milling way. The advantages of the invention are that all the processing planes is processed with one clamping, high processing accuracy, high efficiency and achieves home production of the fin no longer relying on import.

Description

technical field [0001] The invention relates to a manufacturing method of a steam turbine, in particular to a processing method and device for a regulating stage moving blade crown of a steam turbine unit. Background technique [0002] The large steam turbine unit (such as 600MW) produced by my country's introduction of Hitachi technology has the structure of the regulating stage moving blade as follows: figure 1 , figure 2 , image 3 As shown, the blade body II is an ordinary constant-section profile, while the blade root I is a longitudinally installed double T-shaped profile with two assembly feet, and the two assembly feet are located on the 2 # Radiant and 3 # Radiating line with 1 at the center of the blade # The radial line is symmetrical, and with 1 # The radial line has an included angle of 4°5′27″; the shape of the crown III is more specific, and there are three rivet heads arranged horizontally on the longitudinal cylindrical surface 6, and the top surfaces ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/18
Inventor 唐清春袁晓阳
Owner DONGFANG TURBINE CO LTD
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