Spraying protection process method of repaired rotor guard ring spigot

The invention relates to a technology of a rotor guard ring and a process method, which is applied in the direction of coating, a device for coating liquid on the surface, etc., which can solve the problems of inability to use protection and high temperature of the sprayed material, and achieve the effect of reducing production costs.

Active Publication Date: 2020-01-07
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The spray coating of the original retaining ring stop was sprayed before the down-line groove, auxiliary groove and dovetail groove of the reworked rotor. The reworked rotor cannot be sprayed with the coating of the retaining ring seam according to the original process
At the same time, due to the high temperature of the spraying material, it is not possible to use a simple method of bonding an adhesive tape for protection.

Method used

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  • Spraying protection process method of repaired rotor guard ring spigot
  • Spraying protection process method of repaired rotor guard ring spigot
  • Spraying protection process method of repaired rotor guard ring spigot

Examples

Experimental program
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Embodiment Construction

[0027] Spray plating protection process for the repaired rotor retaining ring seam. Its specific implementation process is as follows:

[0028] 1) During the repair process of rotor 1, it was found that the spray coating layer 2 of the retaining ring was damaged and fell off, and it needed to be sprayed again;

[0029] 2) Remove all the parts in the lower wire slot 3, clean the lower wire slot 3, the auxiliary slot 4, and the dovetail slot 5;

[0030] 3) Due to the high temperature of the material sprayed on the coating layer 2 of the retaining ring stop of the reworked rotor 1 during the spraying operation, the spraying protection tools are all made of metal materials;

[0031] 4) Before installing the protective tool, assemble the upper half wedge 6 and the baffle plate 9 into one;

[0032] 5) Turn the rework rotor 1 to turn the lower wire slot 3 where the protective tool is to be installed to the top 120° range, and install the protective tools one by one to one end of ea...

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Abstract

The invention discloses a spraying protection process method of a repaired rotor guard ring spigot. The method is suitable for a repaired rotor, with the guard ring spigot needing coating, of a turbine generator. Protection of other portions, except a coating of the guard ring spigot, is achieved during spraying operation through a method of filling a wire discharging groove with a protection tool. The method has the advantage of high-temperature resistance. The protection tool allows the sprayed surface to be continuous, and thus the average diameter after spraying can be measured. With adoption of a method of detaching within the top range through the protection tool with the slope butt wedge structure, the integrity of the coating at the end of the guard ring spigot is realized.

Description

Technical field: [0001] The invention relates to a spraying protection process method for the stop ring of a repaired rotor. Background technique: [0002] The original design structure of the reworked rotor of gas turbine generator has a sprayed coating at the stop of the guard ring. The defective coating on the seam of the retaining ring is processed off, and a new coating on the seam of the retaining ring is re-sprayed. [0003] The spray coating of the original retaining ring stop was sprayed before the down-line groove, auxiliary groove and dovetail groove of the reworked rotor. The reworked rotor cannot be sprayed with the coating of the retaining ring seam according to the original process. At the same time, due to the high temperature of the spraying material, it is not possible to use a simple method of bonding an adhesive tape for protection. Invention content: [0004] The object of the present invention is to provide a spray coating protection process for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/32
CPCB05D1/32
Inventor 孟秋李津剑刘玉新牛彦文许策季聪尹璐
Owner HARBIN ELECTRIC MASCH CO LTD
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