Shot blasting method for rear journal for gas turbine
A gas turbine and rear journal technology, which is applied to spray guns, used abrasive treatment devices, explosion generating devices, etc., can solve problems such as complex structures, improve work efficiency, improve reliability and durability, and reduce costs. Effect
Active Publication Date: 2021-04-23
中船重工龙江广瀚燃气轮机有限公司
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Problems solved by technology
[0005] The object of the present invention is to provide a method for shot peening of the rear journal of a gas turbine that solves the problems of comprehensive shot peening of the inner and outer surfaces of the rear journal of a gas turbine except for threads and sealing teeth.
Method used
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[0027]The present invention will be described in more detail below with reference to the accompanying drawings:
[0028]CombineFigure 1-5The method of the present invention is completed by the first mounting clip-shot fan-second mount-shot man, which includes the following steps:
[0029]Step 1: First mount;
[0030]Combinefigure 1 ,figure 2 The small head end of the present invention includes a minimum column 2, a lifting ear 3, an elastic pad 4, a bolt 5, a base 6, a support rod 7, a support plate 8, a U-shaped groove A9, and the like, together with a small composition Header assembly protection device. The mounting device is hoisted to the device turntable using the lifting ears 3, and the U-groove A9 and the device turntable are fixed by bolts. Neither the lifting ear 3, attach the elastic pad 4 on the support plate 8. The rear journal small head ends facing the upper mounting device in the small head end.
[0031]Step 2: Outside the small head shot;
[0032]After the thread, the sealing tape ...
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The invention provides a shot blasting method for a rear journal for a gas turbine. Segmented shot blasting and two-time clamping protection are adopted, in other words, replacement of a spray gun and a protection device is optimally conducted in the mode of first-time clamping, shot blasting, second-time clamping and shot blasting, the working efficiency is improved, and the cost is reduced. A rear journal clamping protection device in the shot blasting process provides a stable and reliable support, the shot blasting requirements of rear journals with similar specifications can be met by changing the size of an elastic supporting ring, and the cost can be further reduced. The purpose of prolonging the fatigue life of the rear journal is achieved by performing shot blasting treatment on the rear journal, and finally the reliability and durability of a whole gas turbine unit are improved.
Description
Technical field[0001]The present invention relates to a method of mounting a mounted shot blade, specifically a gas turbine mounting method.Background technique[0002]Gas turbine rear journal belongs to the rotor member. The rear journal belongs to the rear end member of the gas turbine compressor, which is used as the support, transmission, sealing, and working environment of the compressor, and the rear bond neck is manufactured by high temperature alloy.[0003]The local stress and mechanical vibration of the postpiece in the process of the backbone during the rotation process are the main causes of crack germination and early expansion. Intensive induction can introduce a residual compressive field, and make the microstructure, which can significantly improve the fatigue life of the back journal, thereby effectively improve the reliability and durability of the entire combustion engine unit.[0004]After the complex gas turbine, the journal has a small end long diameter, the characte...
Claims
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IPC IPC(8): B24C1/00B24C9/00B24C5/02
CPCB24C1/00B24C9/00B24C5/02
Inventor 高硕任大为李洋祁一东刘澎涛陶林王鑫赵强邢丽丹杨成
Owner 中船重工龙江广瀚燃气轮机有限公司