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Process for making non-preframed volute

A production process and volute technology, which is applied in the field of production technology without pre-installed volute, can solve the problems of steel plate enough material and splicing transition section not pre-installed with shell ring and other problems

Inactive Publication Date: 2007-04-11
SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a manufacturing process without pre-installing the volute, and solve the problem of ensuring the smooth installation of the volute shell ring in the power station without pre-installing the first volute shell ring
During the manufacturing process of the volute without pre-installation, the problems of material supply and splicing of the steel plate, the manufacturing process of the groove of the adjacent shell ring, the forming process and the transition section not being pre-assembled with the shell ring are solved. Four main technical problems of the segmentation problem

Method used

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Examples

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Embodiment Construction

[0018] The technical scheme of the present invention is further illustrated by the following examples: the manufacturing process of the non-preassembled volute, which includes the main process of making the shell ring and the two processes of assembling the transition section of the volute.

[0019] Among them, the main process of making the shell ring includes:

[0020] Purchased materials to length: the width of conventional steel plates is 2 meters and the length is 12 meters. However, the length of the expanded busbar of a power station shell section is nearly 2.5 meters, and the length exceeds 16 meters. The upper splicing reduces many splicing welds and saves a lot of production cycle and welding consumables.

[0021] Splicing: Although the width of the purchased steel plate meets the requirements, most of the shell rings in the length direction still need to be spliced. The blanking of the shell ring is unfolded by a computer program to automatically generate the expan...

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Abstract

The volute making process without preassembling step includes two main technological processes of ring volute making and volute transition section assembling. The ring volute making process includes ten steps, including preparing material, splicing, cutting, making splicing chamfer, indentering and forming, checking data, marking cutting line, polishing, marking, and coating with paint and cement slurry. The present invention can ensure the influent installation of volute in power station, and has the advantages of short welding time, no need of preassembling, low cost, short production period, etc.

Description

technical field [0001] The invention relates to a manufacturing process of a power station volute casing ring, in particular to a manufacturing process without pre-installing the volute. Background technique [0002] As far as the production process of the volute shell ring is concerned, the diameter of the volute shell ring of a certain power station reaches more than 6 meters, which is the largest diameter shell ring currently produced by our company. The company requires that one of the domestic units be pre-installed to check the production of the volute, but the user of the power station is in urgent need of goods, and requires our first volute shell ring to not be pre-assembled in the factory. It is quite difficult to manufacture large-diameter shell rings. For example, the first one is not pre-assembled, which greatly increases the difficulty of our volute manufacturing process and quality control. In order to fully ensure the smooth installation of the volute shell ...

Claims

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Application Information

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IPC IPC(8): B23P23/04B25H7/00
Inventor 熊荣余辉林莉
Owner SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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