Vibration measurement device and method for high-speed rotating machines
AssigneeMitsubishi Heavy Industries Engine & Turbocharger, Ltd.
InventorsTomoaki Inoue, Katsuya Yamashita, Rimpei Kawashita, Hiroshi Nakagawa, Nariaki Seike, Noriyuki Hayashi, Hideo Mori
Life of this patent
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Abstract
This vibration measurement device is configured to measure the balancing vibration of the cartridge, a kind of rotating machines, who has a rotor and a cartridge body to support the rotor rotatably for variable operating speed, and is provided with a rigidly fixed support structure, acceleration sensors which detect the vibration of the cartridge, and a flat spring which elastically supports the cartridge with respect to the support structure and has a variable spring constant of elastic support.
Claims7
A vibration measurement device for a turbocharger for measuring balancing vibration of the rotating machines which have variable operating speed, the rotating machines being a cartridge including a rotor that rotates about an axial line and a cartridge body that rotatably supports the rotor, the vibration measurement device comprising:
- a rigidly fixed support structure;
- a vibration detection unit that detects vibration of the rotating machines;
- and
- an elastic support portion that elastically supports the rotating machines with respect to the support structure and has a variable spring constant of the elastic support, wherein
- the elastic support portion is configured to change the spring constant while the rotor is rotating,
- the elastic support portion is a flat spring,
- a pair of support pillars supporting the flat spring are provided on the rigidly fixed support structure,
- the pair of support pillars slidably support the flat spring in a horizontal direction and are configured to displace a support position of the flat spring, and
- the spring constant is changed by displacing the support position.
A vibration measurement method for a turbocharger for measuring balancing vibration of a rotating machine whose operating speed is variable, the rotating machine being a cartridge including a rotor that rotates about an axial line and a cartridge body that rotatably supports the rotor, the vibration measurement method comprising the steps of:
- elastically supporting the rotating machine with respect to a rigidly fixed support structure, via an elastic support portion which has a variable spring constant;
- rotating the rotating machine about an axial line;
- and
- detecting vibration of the rotating machine, wherein
- the elastic support portion is configured to change the spring constant while the rotor is rotating,
- the elastic support portion is a flat spring,
- a pair of support pillars supporting the flat spring are provided on the rigidly fixed support structure,
- the pair of support pillars slidably support the flat spring in a horizontal direction and are configured to displace a support position of the flat spring, and
- the spring constant is changed by displacing the support position.
A vibration measurement device for a turbocharger for measuring balancing vibration of the rotating machines which have variable operating speed, the rotating machines being a cartridge including a rotor that rotates about an axial line and a cartridge body that rotatably supports the rotor, the vibration measurement device comprising:
- a rigidly fixed support structure;
- a vibration detection unit that detects vibration of the rotating machines;
- and
- an elastic support portion that elastically supports the rotating machines with respect to the support structure and has a variable spring constant of the elastic support, wherein
- the elastic support portion is configured to change the spring constant while the rotor is rotating,
- the elastic support portion is a flat spring,
- a base which is movable in an up and down direction, and a support pillar are provided on the rigidly fixed support structure,
- a first nonlinear spring is provided between the support pillar and the flat spring,
- a second nonlinear spring is provided between the base and the flat spring,
- the spring constant is changed by compressing the first and second nonlinear springs by a movement of the base in the up and down direction.
Dependencies are inferred from the claim text.