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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: 2013-02-27
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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specific Embodiment approach 1

[0015] Embodiment 1: Combining figure 1 , figure 2 and image 3 , the present embodiment provides a method for improving the accuracy of finding the center of the piano wire, which is specifically completed by the following steps:

[0016] 1. Prepare N tube sheets and centering tools for steam turbine heat exchangers; the centering tools include left center plug 1, right center plug 2, left counterweight 3, right counterweight 4 and piano wire 5, the middle tube sheet is set between the two outer tube sheets, the outer tube sheet and the middle tube sheet are both provided with heat exchange tube penetration holes 6, look for the center plug 1 on the left and the right The center plug 2 is provided with a center through hole 8, the left center plug 1 and the right center plug 2 are sequentially arranged in the center through holes 6 on the two outer tube plates, and the left center plug There is a transition fit between the block 1 and the center plug block 2 and the cente...

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 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 present invention relates to the field of methods for improving the accuracy of centering 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 to find the center directly. The holes between the tube sheets not only have poor concentricity, but also easily scratch the tubes during the process of passing through the tubes. SUMMARY OF THE INVENTION [0003] The present invention aims to solve the problem of poor concentricity of the holes between the outer tube sheet and the middle tube sheet during the centering process of the tube sheet in the middle of the steam turbine heat exchanger in the prior art, and provides an improved piano The method of wire finding the accuracy of the center. [0004] A method for improving the accuracy of finding the cente...

Claims

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Application Information

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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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