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Method for improving precision for piano wire to center

A center-finding and precision technology, which is applied in the field of improving the accuracy of piano wire center-finding, can solve problems such as poor concentricity of holes, and achieve the effect of eliminating errors and high precision

Active Publication Date: 2015-04-22
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of poor concentricity of the holes between the outer tube plate and the middle tube plate in the process of finding the center of the tube plate in the middle of the steam turbine heat exchanger in the prior art, and provides an improved piano The accuracy method of finding the center of wire

Method used

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  • Method for improving precision for piano wire to center
  • Method for improving precision for piano wire to center
  • Method for improving precision for piano wire to center

Examples

Experimental program
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specific Embodiment approach 1

[0015] Specific implementation mode one: combine figure 1 , figure 2 and image 3 , this embodiment provides a method for improving the accuracy of finding the center of the piano wire, which is specifically completed according to the following steps:

[0016] 1. Prepare N tube sheets and centering tools for the steam turbine heat exchanger; the centering tool includes a left centering block 1, a right centering block 2, a left counterweight 3, and a right counterweight 4 and piano wire 5, the middle tube plate is set between the two outer tube plates, the outer tube plate and the middle tube plate are provided with heat exchange tube penetration holes 6, the left finds the center block 1 and the right The centering block 2 is provided with a centering through hole 8, the left centering block 1 and the right centering block 2 are sequentially arranged in the center through holes 6 on the two outer tube plates, and the left centering plug Block 1 and the right center plug b...

specific Embodiment approach 2

[0022] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the diameter of the piano wire 5 is 0.5 mm. Others are the same as in the first embodiment.

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Abstract

The invention discloses a method for improving precision for a piano wire to center, and relates to the field of the method for improving precision for the piano wire to center. The method is to solve a problem that hole concentricity between an outside pipe plate and a middle pipe plate is poor in a process of centering the pipe plate on the middle part of a steam turbine heat exchanger in the prior art. The method for improving the precision for the piano wire to center comprises the following steps: firstly, preparing a tool and pipe plates which use the piano wire to center; secondly, measuring various parameters; thirdly, calculating the parameters to acquire collapse quantity; fourthly, vertically moving the pipe plates upwards by the corresponding collapse quantity. The method is applicable to the mechanical processing and manufacturing field.

Description

technical field [0001] The invention relates to the field of methods for improving the accuracy of finding the center of piano wires. Background technique [0002] In the process of finding the center of the tube sheet in the middle of the steam turbine heat exchanger, the product heat exchange tube is often used to find the concentricity, or the steel wire is used directly to find the center. After finding the center through the above two methods, it is found that the outer tube sheet and the middle The holes between the tube sheets not only have poor concentricity, but also easily cause scratches to the tubes in the process of passing through the tubes. Contents of the invention [0003] The present invention aims to solve the problem of poor concentricity of the holes between the outer tube plate and the middle tube plate in the process of finding the center of the tube plate in the middle of the steam turbine heat exchanger in the prior art, and provides an improved pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/252
Inventor 杨飞鹏厉纯义荆壮存邵苓郭连坤陈士龙包耀文潘春雷马春光成国富
Owner HARBIN TURBINE
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