General Electric Company

Nuovo Pignone Tecnologie Srl

Nuovo Pignone Srl

Paolo Trallori

Kevin George Harding

Manuele Bigi

Guiju Song

Massimiliano Ortiz Neri

Massimo Camatti

Zirong Zhai

Ming Jia

Gianni Mochi

Massimiliano Tempestini

Giuseppe Stringano

Guangping Xie

Giacomo Ragni

Alessandro Betti

Francesco Bongini

Simone Pennesi

Roberto Paolanti

A sensor arrangement used for measuring fouling and/or erosion in a machine. A first piezoelectric transducer, a first plate and eventually a first support member form a first vibrating mass. After electrically stimulating the first piezoelectric transducer, the first vibrating mass starts vibrating mechanically and consequently the first piezoelectric transducer generates an electric resonance vibration; the electric resonance vibration is at a resonance frequency depending on the mass of the first vibrating mass. If the mass of the first vibrating mass changes due to fouling and/or erosion by a flow of working fluid in the machine, also the electric resonance vibration frequency changes; such vibration frequency change may be measured and the corresponding mass change may be determined by comparison with a vibration frequency of a second vibrating mass not exposed to the flow of working fluid in the machine.

Sensor arrangement and method for measuring fouling and/or erosion, and machine monitoring fouling and/or erosion

A turbomachine has a casing where liquid may accumulate; at least one liquid level detector is located inside the casing for automatically detecting liquid accumulated inside the casing during operation of the turbomachine; the liquid level detector may be arranged for detecting one or two or three or four liquid levels inside the casing; the liquid level detector is typically connected to an electronic unit at least for automatically signaling the liquid level. The electronic unit controls at least one valve for automatically discharging the accumulated liquid from the casing; in this way, the status of the turbomachine is not only monitored but also managed.

Method of monitoring the status of a turbomachine having a casing wherein liquid may accumulate, arrangement and turbomachine

A surface roughness measurement device that in one embodiment includes main and auxiliary emitting fibers, multiple collecting fibers, an optical housing, main and auxiliary reflective mirrors, and an external circuit. The optical housing includes the fibers and defines an aperture for optically contacting a surface of an object. The main reflective mirror is arranged in the optical housing, for reflecting light emitted from the main emitting fiber to a detecting point of the aperture and reflected light by the object to the collecting fibers. The auxiliary reflective mirror is arranged in the optical housing, for reflecting light emitted from the auxiliary emitting fiber to the detecting point. The external circuit is for generating a laser beam to the main and auxiliary emitting fibers, collecting the reflected light from the collecting fibers, and calculating the surface roughness of the object based on the collected reflected light.

Surface roughness measurement device

Growing community of inventors

Florence, Italy

Paolo Trallori