High-speed dynamic balancing calibration method of gas turbine rotors with power of 254 MW

A technology of high-speed dynamic balance and gas turbine, applied in static/dynamic balance test, machine/structural component test, measuring device, etc., can solve problems such as numerous processes and long balance period, and achieve good balance effect and long balance period The effect of short and shortened balance times

Active Publication Date: 2013-09-18
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the dynamic balance correction method of the existing 254MW gas turbine rotor has many procedures and long balance period, and then provide a high-speed dynamic balance correction method for the 254MW gas turbine rotor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0006] Specific embodiment one: the power of this embodiment is that the high-speed dynamic balance correction method of the rotor of the 254MW gas turbine is to realize according to the following steps: 1. Rotor turning: the pre-installed rotor is inserted into the vacuum chamber, and the vacuum degree is 1× 10 5 Pa, under the condition of rotating speed of 4r / min~6r / min, the rotor runs for 4~8 hours; 2. Low-speed dynamic balance: the rotor is in a vacuum of 1×10 5 Under the condition of Pa, increase the speed of the rotor to 500r / min, and run it stably for at least 30 minutes, measure the initial unbalance, adjust the balance weight, the initial unbalance is controlled within 200 grams, and then adjust the balance weight at a speed of 500r / min Perform low-speed dynamic balancing and measure the residual unbalance. The residual unbalance is controlled within 200 grams, that is, the low-speed dynamic balance is completed; 3. High-speed dynamic balance: the vacuum chamber is ev...

specific Embodiment approach 2

[0008] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in Step 1, the rotor runs for 5 to 7 hours under the condition that the rotation speed is 4.5r / min-5.5r / min. Such setting meets the technological requirements. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0009] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 1, the rotor runs for 6 hours at a rotational speed of 5 r / min. Such setting meets the technological requirements. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a high-speed dynamic balancing calibration method of gas turbine rotors with a power of 254 MW and relates to a dynamic balancing calibration method of gas turbine rotors, solving the problem that the existing dynamic balancing calibration method of gas turbine rotors with a power of 254 MW has various processes and long balancing cycle. The method comprises the following steps: 1, rotor turning: arranging preinstalled rotors into a vacuum warehouse to carry out rotor turning; 2, low-speed dynamic balancing: carrying out low-speed dynamic balancing at a rotating speed of 500 r / min; and 3, high-speed dynamic balancing: carrying out high-speed dynamic balancing at a rotating speed of 3000 r / min so as to complete the dynamic balancing of rotors. By using the high-speed dynamic balancing calibration method of the gas turbine rotors disclosed by the invention, an original low-speed dynamic balancing calibration method is greatly simplified, and only once low-speed dynamic balancing and once high-speed dynamic balancing are required to be performed in the whole process, so that the operating procedure is less, the balancing cycle is short, and the balancing effect is good, thereby meeting the field vibration requirements of a machine set, and improving the accuracy level of dynamic balancing. The method is used for the dynamic balancing calibration of gas turbine rotors.

Description

technical field [0001] The invention relates to a method for correcting dynamic balance of a gas turbine rotor. Background technique [0002] The existing dynamic balance correction method for the gas turbine rotor with a power of 254MW uses a low-speed dynamic balance correction method. Practical work needs. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the dynamic balance correction method of the existing 254MW gas turbine rotor has many procedures and a long balance cycle, and then provides a high-speed dynamic balance correction method for the 254MW gas turbine rotor. [0004] The technical scheme that the present invention takes for solving the above problems is: the power of the present invention is that the high-speed dynamic balance correction method of the 254MW gas turbine rotor is to realize according to the following steps: one, rotor barring: the pre-installed rotor is inserted into the vacuum chamber, I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/38
Inventor 李立波赵俊明庄乾兴张俊成张锡岩张修寰
Owner HARBIN TURBINE
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