Process for repairing nozzle of secondary fuel nozzle assembly of gas turbine

A fuel nozzle and nozzle technology, applied in the field of repair technology, can solve the problems of high cost, high maintenance cost, nozzle erosion of secondary fuel nozzle components, etc., and achieve the effects of reducing maintenance cost, improving accuracy and reducing cost

Inactive Publication Date: 2021-01-15
华瑞(江苏)燃机服务有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The heavy-duty gas turbine is the most efficient heat-power conversion power generation equipment so far, and it is the core equipment in the field of power generation and drive; among them, the secondary fuel nozzle part is one of the indispensable workpieces for the combination of natural gas transportation and air ratio combustion; because The end of the secondary fuel nozzle part works for a long time in the gas turbine, which may easily cause the nozzle of the secondary fuel nozzle part to be corroded. After erosion, new secondary fuel nozzle parts will be directly replaced. Although this method is fast to replace, it is costly. For companies using gas turbines, the entire gas turbine system will be shut down for maintenance at every other end, so quick replacement is very important for users. For gas turbine companies, it has not played any role, and it has also caused the company's maintenance costs to be too high, so there is an urgent need for a method that can repair the nozzle of the workpiece

Method used

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  • Process for repairing nozzle of secondary fuel nozzle assembly of gas turbine
  • Process for repairing nozzle of secondary fuel nozzle assembly of gas turbine
  • Process for repairing nozzle of secondary fuel nozzle assembly of gas turbine

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Embodiment Construction

[0033] Such as Figure 1-6 As shown, a repair process for the nozzle of the secondary fuel nozzle part of the gas turbine, the repair process includes the following steps:

[0034] 1) Disassembly

[0035] Remove the inner core in the gas turbine secondary fuel nozzle part 1;

[0036] 2) Calculate:

[0037] First measure the size of the new secondary fuel nozzle part 1 and nozzle 2 of the same model, and reserve; check the position of the damaged nozzle 2 of the secondary fuel nozzle part 1, draw the cutting line, and then calculate the required shape and size repair parts according to the cutting line 5;

[0038] 3) Process repair part 5:

[0039] Processing the size repair part 5 recorded in step 2 by the machine tool, the size of the processed repair part 5 is greater than or equal to the calculated size of the repair part 5;

[0040] 4) Cutting:

[0041] Use a metal cutting machine to cut the nozzle 2 according to the cutting line mentioned in step 2), completely remo...

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Abstract

The invention discloses a process for repairing a nozzle of a secondary fuel nozzle assembly of a gas turbine. The process comprises the following steps: disassembling, calculating, processing of a repaired part, cutting, mounting, autogenous welding and shaping. By means of the repairing process, the nozzle of the secondary fuel nozzle assembly can be repaired, the cost is reduced, the butt jointaccuracy of the repaired part after machining and the nozzle of which a damaged position is removed is improved through a repairing tool, the repairing efficiency is improved, the repaired nozzle forms a firm welding joint through autogenous welding, the performance of the repaired nozzle is close to the performance of the nozzle before damage to the maximum extent, and the operation and maintenance cost of an enterprise is reduced.

Description

technical field [0001] The invention designs a repairing process, and in particular relates to a repairing process for a nozzle of a secondary fuel nozzle part of a combustion engine. Background technique [0002] The heavy-duty gas turbine is the most efficient heat-power conversion power generation equipment so far, and it is the core equipment in the field of power generation and drive; among them, the secondary fuel nozzle part is one of the indispensable workpieces for the combination of natural gas transportation and air ratio combustion; because The end of the secondary fuel nozzle part works for a long time in the gas turbine, which may easily cause the nozzle of the secondary fuel nozzle part to be corroded. After erosion, new secondary fuel nozzle parts will be directly replaced. Although this method is fast to replace, it is costly. For companies using gas turbines, the entire gas turbine system will be shut down for maintenance at every other end, so quick replac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23K9/29B23K9/04
CPCB23P6/00B23K9/04B23K9/29
Inventor 何建兵
Owner 华瑞(江苏)燃机服务有限公司
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