Machining system for steam turbine rotor

Abstract

The invention discloses a machining system for a steam turbine rotor. The machining system comprises a base, wherein a mounting plate is fixedly mounted at the top of one end of the base, a clamping disc is mounted on the mounting plate, a mounting groove is formed in the middle of the base, a U-shaped frame is slidably clamped to the end, close to the mounting plate, of the mounting groove, a concentric-square-shaped frame is slidably clamped to the other end of the mounting groove, a positioning supporting mechanism is mounted between the concentric-square-shaped frame and the U-shaped frame, and a tool rest is mounted at the top of one side of the base. According to the machining system, a steam turbine spindle is placed on the U-shaped frame after being hoisted by hoisting equipment, then the concentric-square-shaped frame slides along the mounting groove to be connected to one end of the spindle in a sleeving mode, the positioning supporting mechanism conducts self-centering positioning on the spindle to align the axis of the spindle with the clamping disc, and therefore alignment of the clamping disc is facilitated for clamping and fixing; and during machining, the clamping disc drives the spindle to rotate, a turning tool is mounted on the tool rest to turn the spindle, the positioning supporting mechanism evenly supports the spindle to guarantee that the spindle is horizontal, and therefore the machining precision of the spindle is improved.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a machining system for steam turbine rotors. Background technique [0002] The steam turbine, also known as the steam turbine engine, is a rotary steam power device. The high-temperature and high-pressure steam passes through the fixed nozzle to become an accelerated air flow and is sprayed on the blades, so that the rotor equipped with blade rows rotates and does work externally. The steam turbine rotor is formed by A combination of components such as the main shaft, impeller or drum, moving blades, and couplings. The steam drives the rotor to rotate to do work externally. During the machining of steam turbine rotors, the main shaft needs to be turned to ensure the accuracy of the main shaft. The current steam turbine rotor processing equipment turns the main shaft Usually, it is directly clamped and fixed by the face plate, but the length and weight of the main shaft are...

AI Technical Summary

Problems solved by technology

[0002] The steam turbine, also known as the steam turbine engine, is a rotary steam power device. The high-temperature and high-pressure steam passes through the fixed nozzle to become an accelerated air flow and is sprayed on the blades, so that the rotor equipped with blade rows rotates and does work externally. The steam turbine rotor is formed by A combination of components such as the main shaft, impeller or drum, moving blades, and couplings. The steam drives the rotor to rotate to do work externally. During the machining of steam turbine rotors, the main shaft needs to be turned to ensure the accuracy of the main shaft. The current steam turbine rotor processing equipment turns the main shaft Usually, it is directly clamped and fixed by the face plate, but the length and weight of the main shaft are large, it is difficult to maintain its level during installation, and the clamping is difficult, and the lack of support in the middle part during processing will easily cause it to tilt, and the coaxiality after processing low, so we propose a machining system for steam turbine rotors to solve the above problems

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