Counter balance for turbine high-speed dynamic balance

Abstract

The invention relates to a counter balance for turbine high-speed dynamic balance. The counter balance for turbine high-speed dynamic balance resolves the problems that a process counter balance in the prior art needs on-site assembly and grinding when installed, wastes time and is low in work efficiency, the weight of the counter balance is too small, and balance of a rotor with a large initial unbalance amount can not achieved. The counter balance for turbine high-speed dynamic balance is provided with six surfaces, namely a top surface, a bottom surface, a front surface, a back surface and two lateral surfaces, wherein the top surface is an inclined curved surface which protrudes upwards, the bottom surface is an inclined curved surface which is concaved downwards, the front surface, the back surface and the lateral surfaces are flat surfaces, two notches are machined in the intersecting position of the top surface and the back surface, threaded holes are machined in the intersecting positions of the front surface and the bottom surface along the bottoms of the notches, the radius of the arc at the top of the top surface is R1, the radius of the arc at the bottom of the top surface is R2, the radius of the arc at the top of the bottom surface is R3, the radius of the arc at the bottom of the bottom surface is R4, and the distance between the front surface and the back surface is L. The counter balance for turbine high-speed dynamic balance is applied to turbine high-speed dynamic balance experiments.

Description

technical field [0001] The invention relates to a balance block for high-speed dynamic balance of a steam turbine. Background technique [0002] At present, the process balance blocks used for high-speed dynamic balancing of steam turbines are two-half balance blocks. Every time the balance blocks are installed, on-site grinding is required. After grinding, drilling and tapping in the middle of the two halves of the balance blocks takes a long time. It takes a long time to complete, the work efficiency is low, and it lacks versatility. Since each rotor has a different weight radius, each rotor needs to be re-grinded with a balance weight. In addition, the mass per unit arc length of the traditional balance weight is relatively small, which cannot meet the balance requirements of the rotor with a large initial unbalance. Contents of the invention [0003] In order to solve the problems in the prior art that on-site grinding is required for installation of process balance w...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the prior art that on-site grinding is required for installation of process balance weights, time wasting, work efficiency is low, and the weight of balance weights is too small to satisfy rotor balance with large initial unbalance, the invention further provides a steam turbine with high speed Balancing weights for dynamic balancing

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