Device for thermal treatment after welding of partition board of steam turbine

A post-weld heat treatment and steam turbine technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve problems such as deformation, reduce production costs, avoid repairs, and save raw material resources.

Active Publication Date: 2010-06-09
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows companies to change their processes by installing weldable partitions onto specially designed equipment instead of manually adjusting them during manufacturing or testing. By doing this, they can improve accuracy while ensuring consistently high yields without excessive distortion from previous methods like laser beam machining. Additionally, these systems allow importation devices such as sensors used at critical locations within an Ultra Super Critical Unit (UF) to have full access when installed properly. Overall, it simplifies the operation and reduces costly repairs compared with current techniques.

Problems solved by technology

In this patented technical problem addressed in this patents, which can be caused due to factors like high temperature during manufacturing or handling processes such as welds between components made up of materials called nickel plates. These issues may lead to separation within the component itself when subjected to severe conditions over time causing damage. To solve these challenges, current methods involve placing a separate layer onto top of the metal surface beforehand, but it has been found difficult to achieve consistently results without damaging other parts inside the system's interior.

Method used

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  • Device for thermal treatment after welding of partition board of steam turbine
  • Device for thermal treatment after welding of partition board of steam turbine

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Embodiment Construction

[0014] Such as figure 1 As shown, the present invention is a post-weld heat treatment device for a steam turbine diaphragm, which includes a backing plate 1, a filler block, a pressure plate and a pressure plate screw 6, and the diaphragm 10 includes an inner ring 101, a vane 102 and an outer Ring 103, where:

[0015] The backing plate 1 is placed under the partition plate 10, and the backing plate 1 is respectively provided with n screw holes 11 along the circumferential direction at the inner side of the inner ring 101 of the partition plate 10 and the outer side of the outer ring 103 of the partition plate 10, wherein n is Natural number;

[0016] The filler block is placed on the backing plate 1, which includes the outer ring filler block 2 and the inner ring filler block 3, and the outer ring filler block 2 and the inner ring filler block 3 are respectively located under the outer ring 103 and the inner ring 101 of the separator 10 ;

[0017] The pressure plate includes a

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PUM

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Abstract

The invention relates to a device for thermal treatment after welding of a partition board of a steam turbine, the partition board comprises an inner ring, a static blade and an outer ring, special devices comprise a bolster, filler blocks, a pressure plate and screws of the pressure plate, wherein the bolster is arranged below the partition board, n screw holes are formed in the positions of the inner side of the inner ring of the partition board and the outer side of the outer ring along the circumferential direction, wherein n is a natural number; the filler blocks are arranged on the bolster and comprise the outer ring filler block and the inner ring filler block, and the outer ring filler block and the inner ring filler block are respectively positioned below the outer ring and below the inner ring of the partition board. The device can achieve the purposes of eliminating the welding stress of the partition board while fully ensuring the size of the partition board, avoid ultra-poor products, lead the primary qualified rate to be 100% and bring great economic benefits for enterprises.

Description

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Claims

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Application Information

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Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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