Vibration measurement device and method for high-speed rotating machines

Patent metadata

Field	Value
Publication number	US-10520386-B2
Application number	US-201415319992-A
Country	US
Kind code	B2
Filing date	Jun 27, 2014
Priority date	Jun 27, 2014
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

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.

First claim

The invention claimed is:

1. 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.

2. The vibration measurement device for the turbocharger according to claim 1 , further comprising a damping device that provides damping for the rotating machine with respect to the support structure.

3. The vibration measurement device for the turbocharger according to claim 1 , wherein the elastic support portion is provided with a clamp that supports the rotating machine in one of a mechanical manner or an electrical manner.

4. The vibration measurement device for the turbocharger according to claim 3 , wherein the vibration detection unit is provided on the clamp.

5. 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.

6. The vibration measurement device for the turbocharger according to claim 1 , wherein the elastic support portion is provided with a clamp that supports the rotating machine in one of a mechanical manner or an electrical manner.

7. 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.

Assignees

• Mitsubishi Heavy Ind Engine & Turbocharger Ltd

Inventors

• Inoue Tomoaki
• Yamashita Katsuya
• Kawashita Rimpei
• Nakagawa Hiroshi
• Seike Nariaki
• Hayashi Noriyuki
• Mori Hideo

Classifications

• G01M1/18 Primary

  and running the body down from a speed greater than normal · CPC title

• G01M13/028

  Acoustic or vibration analysis · CPC title

• G01M1/22 Primary

  and converting vibrations due to imbalance into electric variables · CPC title