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Laser method for repairing rotor shaft of generator and steam turbine and dedicated device

A steam turbine rotor and laser repair technology, which is applied to the repair of steam turbine rotor shafts and generators, can solve the problems of lack of mobile practicability, inconvenient installation and debugging, complex structure, etc. Repair cycle, good controllability

Inactive Publication Date: 2005-08-31
SHENYANG DALU LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of components and the complex structure, the current laser processing equipment is basically base-type equipment.
In addition, t

Method used

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  • Laser method for repairing rotor shaft of generator and steam turbine and dedicated device
  • Laser method for repairing rotor shaft of generator and steam turbine and dedicated device
  • Laser method for repairing rotor shaft of generator and steam turbine and dedicated device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Embodiment Modular laser processing machine and rotor shaft conformal processing equipment

[0039] The modular laser processing machine consists of a laser generator (11), a laser processing machine, an automatic powder feeder, and a stepless speed regulation mechanism:

[0040] The design of the cooling system of the laser generator (11) adopts open water cooling, the inlet is connected to the on-site water source, and the outlet is directly discharged;

[0041] Laser processing machines (such as figure 1 Shown) is made of base (12), first-level column (131), secondary column (132), crossbeam (14), combined lens barrel (15), and combined lens barrel (15) is made of vertical lens barrel (153), The horizontal lens barrel (154) is actively connected with the vertical telescopic lens barrel (155), and the reflector (151) and focusing mirror (152) arranged in the crossbeam (14) and the combined lens barrel (15) constitute the optical path.

[0042]The vertical telescopic...

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Abstract

An in-situ laser repairing method for the rotor shaft of electric generator or turbine includes such steps as nondestructive inspection and cleaning, laser smelting for repairing, and mechanical shaping. It features that after the alloy powder is attached to the rotating rotor shaft, the laser beam is used to radiate the rotor shaft and the water is used as cooling medium, the stepless speed regulator is cooperating with the winder of in-situ electric generator set, and when it is mached, the rotor shaft is static and the cutting tool is moving around it.

Description

Technical field: [0001] The invention relates to the repair technology of generator and steam turbine rotor shafts, and in particular provides a method for repairing generator and steam turbine rotor shafts on site by adopting laser melting and casting technology. Background technique: [0002] The rotor shafts of generators and steam turbines are large in size and weight, high in precision level, complex in manufacturing process, high in production cost and long in cycle. And once there is a problem in operation, its impact is huge. Therefore, the design of this type of rotor is an infinite life design, that is, it can be used continuously for more than 20 years under normal working conditions. [0003] The general manufacturing process of the rotor shaft includes whole forging type, sleeve type, combined type and welding type. Regardless of the structural form, its quality requirements are relatively high. Due to working at high temperature and high speed, the material ...

Claims

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Application Information

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IPC IPC(8): B21D3/16B23P6/00B23P23/04C23C24/10
Inventor 陈江王一兵张静波
Owner SHENYANG DALU LASER TECH
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