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Processing method for steam seal ring of steam turbine

A processing method and technology of steam sealing ring, which can be applied to mechanical equipment, engine components, machines/engines, etc., can solve the problem of high cost, reduce workload, save raw materials, and improve production efficiency.

Active Publication Date: 2015-12-02
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high cost of existing methods for processing steam seal rings, and to provide a method for processing steam turbine seal rings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Specific implementation mode one: a kind of steam turbine sealing ring processing method in this implementation mode comprises the following specific steps:

[0009] 1. Turn the whole circle of the blank of the seal ring to obtain the seal ring after turning; the diameter of the seal ring after turning is 0.38-0.41mm larger than the final product diameter of the seal ring to be obtained;

[0010] 2. Cut the steam seal ring after turning into six sections with a wire cutting machine tool to obtain the final product of the steam seal ring, that is, to complete the processing method of the steam turbine seal ring.

[0011] In this embodiment, a wire cutting machine tool is used to cut the seal ring. Since the cutout of the wire cutting machine tool is 0.18-0.2 mm, a circle of the seal ring has six cuts, and the total width is only about 1.2 mm. Therefore, turning can be performed on the seal ring. It is necessary to increase the circumference of the steam seal ring by 1.2m...

specific Embodiment approach 2

[0012] Embodiment 2: This embodiment differs from Embodiment 1 in that: the steam seal ring blank described in Step 1 is a complete ring blank. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0013] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the diameter of the turned seal ring in step 2 is 0.40mm larger than the final product diameter of the seal ring to be obtained. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

[0014] Verify the beneficial effects of the present invention through the following examples:

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PUM

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Abstract

The invention discloses a processing method for a steam seal ring of a steam turbine, and relates to the processing method for the steam seal ring of the steam turbine. The invention aims to solve the problem that a current steam seal ring processing method is high in cost. The processing method comprises the following steps: turning steam seal ring blank in a whole-ring mode, and cutting the tuned steam seal ring by use of a linear cutting machine tool. The processing method can be used for processing the steam seal ring with one ring of the blank, and reducing workload of repairing a radiant surface by a bench worker, thereby improving the production efficiency and saving the blank. The processing method is applied to the field of steam turbines.

Description

technical field [0001] The invention relates to a processing method for a steam turbine seal ring. Background technique [0002] Each circle of the steam seal ring is generally composed of 6 sections. The processing of the steam seal ring is first to turn the blank of the steam seal ring, and then cut it with a saw blade milling cutter for flat milling. Due to the width of the saw kerf of the milling cutter, the width of each saw kerf It is 2~3mm. If six sections are cut out, there will be a shortage of 12~18mm. Due to the large gap, it cannot be made up during turning. For each section, leave a margin for repair on the radiating surface of each section, and align the radiating surfaces of the steam seal ring during assembly. Therefore, the raw material of each seal ring cannot be processed into a finished seal ring, which increases the material cost. Contents of the invention [0003] The object of the present invention is to solve the problem of high cost of the existi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00F01D11/00
Inventor 谭召生庄乾才季东军薛红玉隋朝龙吴爽新姜东全吕思佳于占华郭洁
Owner HARBIN TURBINE
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