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Steam generator tube plate overturning device and method

A steam generator and tube sheet technology, applied in the field of mechanical processing, can solve problems such as difficulties in lifting and transferring tube sheets, limited operating space, and welding lugs

Active Publication Date: 2021-05-14
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]In the existing technology, when performing each process of tube sheet manufacturing, the lifting, transfer and turning operations of the tube sheet are generally done by welding lifting lugs on the tube sheet However, it is very difficult to lift and transport the tube sheet for some cases where the material of the tube sheet is special or the operation space is limited when performing flaw detection on the outer wall of the tube sheet, and it is impossible to weld lifting lugs on the product

Method used

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  • Steam generator tube plate overturning device and method
  • Steam generator tube plate overturning device and method

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Embodiment approach

[0058] According to a preferred embodiment of the present invention, the connection between the fixing plate 11 and the fixing ring 1 is a non-detachable connection, and the non-detachable connection has the advantages of good connection integrity and light structure. Preferably, the connection between the fixing plate 11 and the fixing ring 1 is adhesive connection or welding connection; more preferably welding connection, especially sealing welding.

[0059] Since the tube sheet usually has a large tonnage, the device needs to be strong enough to avoid breakage during the flipping process, so welding is particularly important here. Compared with other methods, welding has the highest firmness and stronger durability.

[0060] According to a preferred embodiment of the present invention, the overall perimeter of the ring after splicing is slightly smaller than the perimeter of the tube sheet 3, and the spliced ​​ring should ensure that there is a certain gap on the opposite si...

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Abstract

The invention relates to a steam generator tube plate overturning device and a method. The overturning device comprises a fixing ring (1) and a pressing plate (2), the fixing ring (1) is of an arc structure, fixing plates (11) are arranged at the two ends of the arc, and the fixing ring (1) and a tube plate (3) are fixedly connected into a whole through the pressing plate (2). The overturning device provided by the invention is ingenious in design, high in practicability, easy to manufacture and low in cost, assembly positioning can be effectively achieved through mechanical connection of the overturning device and a product, and the problem of tube plate hoisting and transferring due to the fact that a hoisting hoisting point capable of being directly used is not arranged on a body is solved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a device and method for turning over a tube sheet of a steam generator. Background technique [0002] A steam generator is a mechanical device that uses heat energy from fuel or other energy sources to heat water into hot water or steam. [0003] The tube sheet is an important part of the steam generator. It is a hole slightly larger than the outer diameter of the tube drilled on the circular steel plate. It is a circular cake-shaped structure that plays the role of fixing the tube and sealing the medium in the heat exchanger. It is a kind of fitting that plays a role in piercing the pipe and welding it in place. As a round cake-shaped structure, the tube sheet weighs as little as a few tons and as large as dozens of tons. There are many processes in the manufacturing process, involving various processes such as surfacing welding and machining. [0004] In the existing tech...

Claims

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Application Information

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IPC IPC(8): B66C1/66B66C13/08
CPCB66C1/66B66C13/08
Inventor 徐建梅王永明王立辉李树辉刘晶杨海尹红
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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