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Steam turbine blade fitting measuring tool and processing technology thereof

A steam turbine blade and blade assembly technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of delayed unit manufacturing cycle, heavy repair workload, low work efficiency, etc., to avoid batch quality problems of blades, improve The effect of assembly work efficiency and shortened manufacturing cycle

Active Publication Date: 2012-05-09
DONGFANG TURBINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Since some quality indicators of the blade are assembly indicators, such as the assembly clearance of the blade root, the assembly clearance of the blade crown, the height of the blade root, the height of the steam path, etc., it needs to be inspected after the blade is installed in the rotor groove. Assembling requirements, the blades must be unloaded and returned to the blade processing unit for repairing, which is time-consuming and laborious, with low work efficiency and easy to delay the manufacturing cycle of the unit. Once a quality problem is found, all blades of the same batch must have this problem , the workload of rework is very large, the economic loss is huge, and the work plan of the blade production department will also be disrupted

Method used

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  • Steam turbine blade fitting measuring tool and processing technology thereof
  • Steam turbine blade fitting measuring tool and processing technology thereof
  • Steam turbine blade fitting measuring tool and processing technology thereof

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Embodiment Construction

[0031] When designing the whisk distribution measuring tool, it simulates an arc segment of the impeller, which is called a false impeller. Generally, three blades are considered to be installed, that is, there are three blade assembly grooves on the whisk distribution measuring tool, and the contour line, radial radius and circumference of the assembly groove The graduations in the direction are designed according to the profile line, radial radius and circumferential graduation of the rotor blade assembly groove respectively.

[0032] Considering the convenience of processing and use, the shape of the false impeller is not necessarily designed to be strictly fan-shaped, the inner arc surface is changed to a horizontal plane, and the two circumferential sides are not sloped, but are changed to vertical surfaces. In addition, in order to facilitate the movement during use, a pair of handles are designed on the false impeller, which are arranged on the two circumferential sides....

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Abstract

The invention discloses a steam turbine blade fitting measuring tool and a processing technology thereof. The fitting measuring tool is a fake impeller simulating an arc of steam turbine rotor impeller, the fake impeller is provided with a plurality of blade assembling slots distributed in a radial manner, the contour line, the radial radius and the circumferential graduation of the assembling slot are all consistent with those of the assembling slot of real impeller, and the bottom of the slot is provided with a blade locking screw hole and screws. The fitting measuring tool is used for the pre-assembly of blades, in order to inspect the quality indexes of assembly in advance, avoid the quality-related problem of blades in batch, reduce maintenance rate, enable blades to meet the assembly requirement in production workshop, enhance working efficiency, shorten assembly period of unit, and lower economic losses.

Description

Technical field: [0001] The invention relates to a steam turbine blade, in particular to a measuring tool for distributing the blade and its processing technology. Background technique: [0002] The steam turbine blade is a key part of the steam turbine. Its shape is complex. It is a typical special-shaped part. It is very difficult to process and requires special machine tools. The batch is also large. Steam turbine manufacturers generally set up special blade manufacturing departments to implement specialized production. Batches are shipped to the rotor assembly department, which installs them on the rotor impeller, that is to say, blade manufacturing and rotor assembly are two independent work departments. [0003] Since some quality indicators of the blade are assembly indicators, such as the assembly clearance of the blade root, the assembly clearance of the blade crown, the height of the blade root, the height of the steam path, etc., it needs to be inspected after the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P19/00B23P15/00
Inventor 陈兴莲唐可富
Owner DONGFANG TURBINE CO LTD
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