Renovation technique of combustion turbine retaining ring

Abstract

The invention provides a gas turbine retaining ring repair art, its steps are as follows: laser fusion covering repair of cracks and defects parts and the parameters are: the fusion pool size 2 ~ 5mm diameter when laser fusion covering, depth is 0.1 to 0.2mm, the heating time is 0.001 ~ 0. 1s; processing overall inner round with special equipments, special equipment includes base 7, loose piece 4, draw rod 2, press plate 12 and pin 8; loose piece 4 is fixed on the base 7 with bolt 5 and positioned with the positioning pin 6; screw bolt 9 is welded on the loose piece 4, press plate 12 presses the loose piece 4 through screw cap 10 and screw bolt 9; the pin 8 insert into the hole of draw rod 2 through loose piece and moving pin 8 with adjusting screw cap 1.The advantages of the process are: achieving repair of retaining rings, covering the blank of retaining rings only can be prepared and not be repaired, the adaptability of the repair process is strong, operation is simple, thermal deformation is small, standard capability is strong, and the processing error is small after machining and installing .

Description

technical field [0001] The invention relates to the maintenance technology of gas turbines, and in particular provides a maintenance technology and tooling for gas turbine retaining rings. Background technique [0002] Gas turbine power generation has the advantages of small workshop, small footprint, short construction period, low pollution emissions, low investment, high efficiency, fast start-up, no need for water or less water, no need for external power supply, simple equipment, low maintenance costs, and easy operation In the past ten years, my country has successively established dozens of gas turbines and combined cycle power stations. According to incomplete statistics, the total installed capacity of the country has exceeded 10 million KW so far, and its share in the power industry is increasing. . [0003] A gas turbine is a rotary power machine that directly converts the heat energy generated by fuel combustion into mechanical work for external output, and is comp...

AI Technical Summary

Problems solved by technology

[0005] At present, most of the gas turbines in my country are imported units. Although the retaining ring can be manufactured in China, the manufacturing cycle is about 3 to 6 months. In addition, heat-resistant alloy steel is used, and the manufacturing cost is relatively high. A set is worth more than 400,000 yuan. RMB

Therefore, this brings about a long period of remanufacturing and relatively high costs.

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