Supercharge Your Innovation With Domain-Expert AI Agents!

Process for overhauling rotor of hydro-generator

A technology for hydroelectric generators and rotors, which is applied in the manufacture of stator/rotor bodies, etc., and can solve problems such as reduced rotor insulation and reduced rotor insulation resistance

Inactive Publication Date: 2015-04-08
大唐陕西发电有限公司石泉水力发电厂
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the operation of the rotor of the hydro-generator, the insulation of the rotor is reduced. During the long-term operation of the unit, since the insulating sleeve and the pad have a split structure without a slit, carbon powder is easy to enter the gap between the insulating sleeve and the pad. Over time, carbon powder accumulates more and more, resulting in a decrease in the insulation resistance of the rotor. Therefore, a simple and effective maintenance process is required to facilitate the maintenance of the rotor of the hydro-generator.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Preferred embodiments of the present invention will be described in detail below.

[0025] The rotor overhaul mainly includes the excitation wires from the de-excitation switch cabinet to the brush frame (4 in parallel for each pole), the excitation wires hard-connected from the slip ring to the lead wire of the rotor magnetic pole coil (the copper busbar of each pole is coated with epoxy powder mica insulation tape), Wind tunnel cleaning and insulation inspection of terminal discs, slip rings, brush holders, hard connections, etc.

[0026] Disassembly, inspection and maintenance items of the excitation wire between the de-excitation switch cabinet and the hard connection of the lead wire of the rotor magnetic pole coil:

[0027] 1) The nose of the excitation wire at the brush holder needs to be cut off, and the positive and negative marks of the connector should be marked.

[0028] 2) Check whether the insulation layer of all excitation wires is damaged, and whether t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a process for overhauling a rotor of a hydro-generator. The process comprises dismounting, checking and overhauling exciting coils between a field suppression switch cabinet and hard links of rotor pole coil lead wires during overhauling, and comprises the following steps: (1) breaking the lead of the coil noses of the exciting coils at a brush yoke, and marking the anode and the cathode of a joint; (2) checking insulating layers of all exciting coils; (3) breaking the lead of the joint for hard connection between the exciting coils and the rotor pole coil lead wires; (4) rigidly connecting the exciting coils with the rotor pole coil lead wires; (5) measuring the direct-current resistance and the insulation resistance of the exciting coils and the rotor pole coils so as to conveniently overhaul the rotor of the hydro-generator.

Description

technical field [0001] The invention relates to the field of hydraulic generator rotors, in particular to a hydraulic generator rotor maintenance process. Background technique [0002] During the operation of the rotor of the hydro-generator, the insulation of the rotor is reduced. During the long-term operation of the unit, since the insulating sleeve and the pad are of a split structure without a slit, carbon powder is easy to enter the gap between the insulating sleeve and the pad. Over time, carbon powder accumulates more and more, resulting in a decrease in the insulation resistance of the rotor. Therefore, a simple and effective maintenance process is needed to facilitate the maintenance of the rotor of the hydro-generator. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a hydraulic generator rotor maintenance process to solve the above-mentioned multiple defects caused by the prior art. [0004] In order ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/02
Inventor 李军衣
Owner 大唐陕西发电有限公司石泉水力发电厂
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com