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Method for manufacturing rear sealing ring of lining of transition section of 300MW-level F-level reignition combustion chamber

A manufacturing method and post-sealing technology, which are applied in the field of steam turbine manufacturing, can solve the problems of waste of man-hour and cost, complex shape of the sealing ring, long cycle and low efficiency, etc., and achieve the effects of low manufacturing cost, few tooling aids, and short production cycle.

Inactive Publication Date: 2021-06-18
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of complex shape of the rear sealing ring of the liner in the transition section of the existing reburning combustion chamber, cumbersome processing, long cycle, low efficiency, high manufacturing cost, and waste of man-hours and costs, the present invention further proposes a 300MW class F Manufacturing method of rear sealing ring of liner in transition section of stage reburning combustor

Method used

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  • Method for manufacturing rear sealing ring of lining of transition section of 300MW-level F-level reignition combustion chamber
  • Method for manufacturing rear sealing ring of lining of transition section of 300MW-level F-level reignition combustion chamber
  • Method for manufacturing rear sealing ring of lining of transition section of 300MW-level F-level reignition combustion chamber

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specific Embodiment approach 1

[0020] Specific implementation mode one: combine Figure 1 to Figure 6 To illustrate this embodiment, the manufacturing method of a 300MW class F reburning combustion chamber transition section liner rear sealing ring described in this embodiment includes the following steps:

[0021] Step 1: Determine the external dimensions: use the molding test to determine the actual unfolded view of the product and the midline position of the actual expanded view, and determine the external dimensions of the half-sheet expanded view;

[0022] Step 2: blanking: according to the external dimensions of the half-sheet expansion diagram, use a cutting machine to cut and blank the coiled sheet, and process it into a workpiece sheet 4;

[0023] Step 3: shape processing: first clamp the cut workpiece plate 4 between the front end face of the molded line plate 5 on the front end face of the clamp body 1 and the rear end face of the pressure plate 2, and fasten it with a plurality of screws 3, and ...

specific Embodiment approach 2

[0027] Specific implementation mode two: combination Figure 1 to Figure 6 This embodiment will be described. In Step 3 of this embodiment, when machining the annular groove of the workpiece, a copper hammer is used to manually knock it into shape. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

specific Embodiment approach 3

[0028] Specific implementation mode three: combination Figure 1 to Figure 6 Describe this embodiment, in the step 3 described in this embodiment, the profile shape of the outer edge of the profile plate 5 is the same as the profile line of the groove bottom of the annular groove of the rear seal ring half, and the thickness of the profile plate 5 is the same as that of the rear seal ring. The annular grooves of the halves have the same groove width. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0029] In this embodiment, a new type of fixture is used to clamp the workpiece plate 4. A forming fixture for the rear sealing ring of the transition section bushing of the 300MW class F reburning combustion chamber includes a clamp body 1, a pressure plate 2, a molded line plate 5 and A plurality of screws 3 and a profile plate 5 are affixed to the front end surface of the clamp body 1. The profile shape of the outer edge of t...

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Abstract

The invention discloses a method for manufacturing a rear sealing ring of a lining of a transition section of a 300MW-level F-level reignition combustion chamber, and relates to the technical field of steam turbine manufacturing. The invention aims to solve the problems of relatively complex shape, tedious processing process, long period, low efficiency, relatively high manufacturing cost and the waste of working hours and cost of the rear sealing ring of the lining of the transition section of an existing reignition combustion chamber. The manufacturing method comprises the steps of determining boundary dimensions; conducting blanking, specifically, conducting cutting blanking on a coiled plate through a cutting machine according to the boundary dimension of a half-piece unfolded drawing; conducting contour machining: firstly, clamping a cut workpiece plate, machining the workpiece plate in a manual shape knocking mode, enabling the workpiece plate to be tightly attached to the edges of the front end face, the outer side wall and the rear end face of a molded line plate, and machining an annular groove of a workpiece; conducting inner shape cutting: scribing the workpiece by using an inner molded line sample plate, and performing inner molded line cutting in a linear cutting manner; conducting welding; and conducting butting. The method is used for manufacturing the rear sealing ring of the lining of the transition section of the reignition combustion chamber.

Description

technical field [0001] The invention relates to the technical field of steam turbine manufacturing, in particular to a method for manufacturing a rear sealing ring of a liner in the transition section of a 300MW class F reburning combustion chamber. Background technique [0002] The shape of the rear sealing ring of the 300MW class F reburning combustion chamber transition section bushing is relatively complicated. During processing, the traditional method is segmented rolling forming followed by tailor welding, which requires three dies and one welding die. It is cumbersome, the cycle is long, the efficiency is low, and the manufacturing cost is high, resulting in waste of man-hours and costs. Contents of the invention [0003] In order to solve the problems of complex shape of the rear sealing ring of the liner in the transition section of the existing reburning combustion chamber, cumbersome processing, long cycle, low efficiency, high manufacturing cost, and waste of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 胡立国刘枫张景龙潘春雷张仁军李宝磊刘剑利王利利赵泰宇王海波
Owner HARBIN TURBINE