A hydraulic non-destructive disassembly device for a micro gas turbine rotor

Abstract

The invention discloses a hydraulic nondestructive disassembly device for a micro gas turbine rotor. The disassembly device comprises a disassembly hydraulic rod, sealing rings and a pressure pump; peripheral equipment is the micro gas turbine rotor; an axial through hole and one or two radial through holes are formed in the disassembly hydraulic rod; a sealing ring assembly groove is formed in the outer side of each radial through hole; the disassembly hydraulic rod is assembled into the micro gas turbine rotor instead of a central shaft of the micro gas turbine rotor; the radial through holes correspond to assembling clearances among rotor components; one end of the axial through hole is sealed, and the other end of the axial through hole is connected with the pressure pump; the sealing rings are assembled on the annular sealing ring assembly grooves to seal the axial clearances; and pressure cavities are formed at the assembly clearances by pressurizing through the pressure pump. According to the hydraulic nondestructive disassembly device, a hydraulic principle is adopted to generate pushing force to separate the components; hydraulic force is uniformly distributed; disassembly complexity is greatly lowered while disassembly reliability is improved; scratches are prevented from being generated on parts; and the parts can be utilized repeatedly, so that use cost is lowered.

Description

technical field [0001] The invention relates to the field of mechanical design, in particular to a hydraulic non-destructive disassembly device for a micro gas turbine rotor. Background technique [0002] A micro gas turbine is a device that converts the chemical energy of fuel into mechanical energy. It is generally composed of a radial turbomachinery, a single cylindrical combustion chamber and a regenerator. The design and structure of the power components are derived from turbochargers and auxiliary power units. By adopting radial impeller machinery, that is, centripetal turbine and centrifugal compressor, the structure can be simple, compact and easy to move. It is characterized by small flow, low power and high speed. Micro gas turbines using air bearings have a series of advantages such as high reliability, long life, low noise, light weight, small size, low pollution, multiple fuels, and low fuel consumption. They have good prospects for civil demand and military ap...

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Problems solved by technology

[0003] The rotor of a micro gas turbine generally consists of a motor shaft, a centrifugal impeller, a turbine rotor, a main shaft, a tie rod and a case. The rated speed of the rotor is as high as 90,000rpm. The case is a supporting structure. The main shaft passes through the case. Install the turbine rotor and the centrifugal impeller to form the rotor assembly. The gap between the assembly and the casing is small, and the disassembly is complicated. The traditional prying method will cause scratches on the end faces of the turbine rotor, centrifugal impeller and the main shaft, especially the surface of the main shaft contains a chrome layer. The traditional disassembly method is destructive, the parts cannot be reused, and the requirements for tooling and operators are high

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