Method for measuring steam turbine hot component based on laser measuring instrument

A technology of laser measuring instruments and steam turbines, which is applied to measuring devices, instruments, and optical devices, etc. It can solve the problems of large errors and multiple retests, and achieve the effects of simple measurement, avoiding damage probability, and easy access to data

Pending Publication Date: 2021-09-03
深能合和电力(河源)有限公司
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AI Technical Summary

Problems solved by technology

However, the traditional measurement method has large errors and requires repeated measurements. Therefore, we propose a method based on a laser measuring instrument to measure steam turbine thermal components to solve the above problems

Method used

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Embodiment Construction

[0015] The present invention will be further explained below in conjunction with specific embodiments.

[0016] A method for measuring steam turbine thermal components based on a laser measuring instrument, comprising the following steps:

[0017] S1. Use the target ball to collect points at the two ends between the moving blade and the stationary blade, the shaft journal and the shaft seal, the bearing bush and the oil block respectively. The sampling points are the moving blade, the stationary blade, the journal, the shaft seal, the bearing bush and the center of the oil retainer;

[0018] S2. Use a laser measuring instrument to launch a stable helium-neon laser beam at the position of the target ball on the moving blade. The laser beam reaches the target ball on the stationary blade and is reflected back. Record the reflection time t1;

[0019] S3. Then use the laser measuring instrument to emit three stable helium-neon laser beams from the position of the target ball on t...

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Abstract

The invention relates to the technical field of steam turbine hot component measurement, in particular to a method for measuring a steam turbine hot component based on a laser measuring instrument, which comprises the following steps of: S1, respectively performing point collection on two ends between a movable blade and a stationary blade, between a shaft neck and a shaft seal, between a bearing bush and an oil shield by using a target ball; and S2, emitting a stable laser beam at the position of the target ball on the driven blade through a laser measuring instrument, reflecting back the laser beam after reaching the target ball on the stationary blade, and recording the time t1 used for reflection. The laser tracker measurement technology is applied to steam turbine body maintenance, the damage probability of some components in the repeated disassembly and assembly process of the cylinder body is avoided, measurement is simple, data are easy to obtain, data are very easy to analyze, defect treatment, gap adjustment and the like of the components are carried out in a targeted mode, the method is equivalent to a traditional detection mode, and the working time is saved, and the maintenance period is shortened.

Description

technical field [0001] The invention relates to the technical field of measuring steam turbine thermal components, in particular to a method for measuring steam turbine thermal components based on a laser measuring instrument. Background technique [0002] The steam turbine is the most important equipment for converting heat energy into kinetic energy in a thermal power plant. The high-temperature and high-pressure superheated steam produced by the boiler is guided into the steam chamber of the steam turbine, and the 28-stage blades on the rotor are impulsed step by step after adjusting the direction of the steam flow. , the rotor can be rotated, and the rotor of the steam turbine and the rotor of the generator are also rigidly connected through the coupling, which drives the generator to rotate, and then converts it into electrical energy. [0003] In the overhaul of the steam turbine body, in order to make the dynamic and static clearance values ​​at all levels reach the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 刘建伟贺栋红
Owner 深能合和电力(河源)有限公司
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