High-speed dynamic balancing method for blade replacement of lm6000 gas turbine rotor
A technology of rotor blades and gas turbines, which is applied in static/dynamic balance testing, measuring devices, testing of machine/structural components, etc., can solve problems such as high maintenance costs and long maintenance cycles, and save maintenance costs and maintenance costs The time required, the effect of reducing the degree of dependence
Active Publication Date: 2015-07-29
HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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Problems solved by technology
The repair of high-pressure compressor vibration belongs to level two or above maintenance in GE product-related regulations, and must be returned to the factory
Returning to the factory for maintenance has problems such as high maintenance costs and long maintenance cycles
Method used
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Embodiment Construction
[0032] The high-speed dynamic balancing method described in this embodiment when the rotor of the LM6000 gas turbine is replaced with blades is applied to a power plant in the process of replacing blades and dynamic balancing of the LM6000 gas turbine according to the content of GE's SB229 announcement, including the following steps:
[0033] 1) Balance calculation of rotor blades. Calculate the equilibrium position of the high-pressure rotor before replacement, and after replacing the blades, adjust the position of the blades so that the equilibrium position after replacement is close to that before replacement.
[0034] The table below shows the blade model and weight corresponding to each position before and after replacing the blade.
[0035] Table 1
[0036]
[0037]
[0038] From the results in Table 1, apply the formula in step 1) to calculate The equilibrium position after blade replacement is close to that before replacement.
[0039] 2) Phase measurement ...
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The invention discloses a high-speed dynamic balance method in blade reloading of an LM6000 gas turbine rotor. The method comprises the main steps of 1), conducting optimized sorting on rotor blades, and enabling the quality of the rotor blades to achieve the target value; 2) conducting phase measurement on the totally-closed high-speed rotor; 3) determining the phase position and the weight of a balance block. According to the high-speed dynamic balance method in the blade reloading of the LM6000 gas turbine rotor, replacement and high-speed dynamic balance working on the blades of the LM6000 gas turbine rotor can be completed under the situation that depot repair is not carried out, and the high-speed dynamic balance method is of great significance in breaking technological monopoly of a foreign enterprise, reducing the degree of dependence on a manufacturer or the foreign enterprise, saving the maintenance cost and saving time required by the maintenance.
Description
technical field [0001] The invention belongs to the field of maintenance of gas turbines, and in particular relates to a high-speed dynamic balancing method when the rotor of an LM6000 gas turbine is replaced with blades. Background technique [0002] The combination of natural gas with high-efficiency gas turbines and their combined cycle not only gives full play to the advantages of gas turbines, such as low emissions, low investment, high efficiency, fast construction, small water use and floor space, and quick start-up, but also completely solves environmental pollution problems. One of the main directions to optimize the structure of thermal power in my country. [0003] Gas turbine generator sets operate under high temperature, high pressure, high speed, and high load. With the commissioning of a large number of gas turbine generator sets, various mechanical failures will inevitably occur. Among them, the vibration of gas turbine sets is of particular concern. . [00...
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IPC IPC(8): G01M1/38
Inventor 陈太文蔡渊庞松岭梁钰
Owner HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST