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Vibration monitoring device for gas compressor movable blades of gas turbine

A gas turbine and vibration monitoring technology, which is applied in vibration testing, measuring devices, testing of machine/structural components, etc., can solve few problems such as compressor blade vibration monitoring, complex testing system, etc., and achieve the effect of improving health management level

Pending Publication Date: 2018-11-02
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

Compressor blades need to do various vibration tests in the design and manufacturing stages, including the static blade vibration characteristics test and the vibration characteristics test in the rotating state. After putting into actual operation, due to the complexity of the test system, it is rarely used on the actual unit. Application of vibration monitoring of compressor blades

Method used

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  • Vibration monitoring device for gas compressor movable blades of gas turbine
  • Vibration monitoring device for gas compressor movable blades of gas turbine
  • Vibration monitoring device for gas compressor movable blades of gas turbine

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] see figure 1 , the present invention is a vibration monitoring device for gas turbine compressor moving blades, comprising a gas turbine compressor rotor 1 placed on the left support bearing 2 and right support bearing 3, the gas turbine compressor rotor 1 includes a compressor part 4 and a turbine part 5, The rotor is wrapped by the upper cylinder 6 of the gas turbine and the lower cylinder 7 of the gas turbine, and the upper and lower cylinders are fixedly connected by cylinder bolts. A number of burners 8 are evenly arranged around the circumference of the compressor part 4 and the turbine part 5 along the direction of rotation; The cylinder is provided with a compressor air inlet 9.

[0028] A rotor shaft vibration displacement sensor 10 is arranged at the position of the supporting bearing for real-time measurement of the vibration displacement c...

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Abstract

The invention discloses a vibration monitoring device for the gas compressor movable blades of a gas turbine. A blade tip noncontact vibration measuring sensor and a rotational speed sensor are disposed. The vibration data of the gas compressor movable blades is obtained by using a blade tip timing measurement method. Strain gages are disposed on two to four movable blades in each stage of the gascompressor. The vibration data of the two to four movable blades is obtained by using a radio telemetry method and is compared with the blade vibration data obtained by the blade tip timing measurement method. The error range of the movable blades in each stage is analyzed and the vibration measurement data of each movable blade is corrected to improve the vibration measurement accuracy of each movable blade.

Description

technical field [0001] The invention relates to a vibration monitoring device for gas turbine compressor blades. Background technique [0002] With the continuous development of clean energy in my country, the installed capacity of gas turbine power stations has grown steadily. In order to ensure the safe operation of gas turbines, the level of various online monitoring technologies for gas turbines is also constantly improving. The compressor blade is an important part of the gas turbine, and the vibration measurement of the compressor blade is one of the key technologies of the gas turbine. Domestic gas turbine combined cycle peaking units are frequently started and stopped, and failures of compressor blades occur from time to time. Compressor blades need to do various vibration tests in the design and manufacturing stages, including the static blade vibration characteristics test and the vibration characteristics test in the rotating state. After putting into actual oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/00
Inventor 上官博肖俊峰高松李园园张蒙闫安
Owner XIAN THERMAL POWER RES INST CO LTD
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