Ultrasonic focusing liquid vibration polishing method based on spherical shell piezoelectric transducer,Optical path adjustable pipe phase holdup detection system and method

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2 results about "Concave side" patented technology

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2 : arched in : curving in —used of the side of a curve or surface on which neighboring normals to the curve or surface converge and on which lies the chord joining two neighboring points of the curve or surface. concave. noun. con·cave | \ ˈkän-ˌkāv \. Definition of concave (Entry 2 of 2) : a concave line or surface.

Ultrasonic focusing liquid vibration polishing method based on spherical shell piezoelectric transducer

InactiveCN108381304AReduce machining accuracyReduce sizeElectricityRetention time

The invention discloses an ultrasonic focusing liquid vibration polishing method based on a spherical shell piezoelectric transducer. The method comprises the steps that a workpiece to be processed isput in an open container, wherein the open container is filled with a polishing solution; the spherical shell piezoelectric transducer which can be moved to change the position in the horizontal or perpendicular direction is placed above the workpiece to be processed, and soaked in the polishing solution all the time, and the concave side points to the surface, to be processed, of the workpiece to be processed; and an ultrasonic power source is started to generate high-frequency electricity so as to excite the spherical shell piezoelectric transducer to generate ultrasonic vibration, the spherical shell piezoelectric transducer is moved according to a preset processing path and the retention time of focused ultrasonic waves on each processing point, ultrasonic vibration is transmitted bythe polishing solution to be focused on the workpiece to be processed, and the surface of the workpiece to be processed is polished. The ultrasonic focusing liquid vibration polishing method based onthe spherical shell piezoelectric transducer can achieve accurate correction of the surface of the workpiece.

Owner:TIANJIN UNIV

Optical path adjustable pipe phase holdup detection system and method

ActiveCN110441239AIncrease the optical pathAccurate measurementColor/spectral properties measurementsSignal-to-noise ratio (imaging)Light guide

The invention provides an optical path adjustable pipe phase holdup detection system and method. The system comprises a pipe device, an optical path adjusting device, a light source emitter and a signal receiving device. The pipe device comprises an organic glass pipe located in the middle, and a large-diameter pipe, a transition tapered tube and a small-diameter pipe which are connected with twoends of the organic glass pipe in sequence. The optical path adjusting device comprises a first concave reflection mirror and a third concave reflection mirror which are set at the lower side of the organic glass pipe, and a first light guide mirror, a second concave reflection mirror and a second light guide mirror which are set in sequence at the upper side of the organic glass pipe. The first light guide mirror and the third concave reflection mirror are symmetrically set at two sides of a central axis of the second concave reflection mirror. The light source emitter is used for emitting visible light and near-infrared light. The system and the method are simple in structure. Free adjustment of an optical path is realized. The optical path is increased. A signal to noise ratio is improved. Measurement accuracy is improved. Real-time online detection can be realized.

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Owner:HEBEI UNIVERSITY

2 results about "Concave side" patented technology

Ultrasonic focusing liquid vibration polishing method based on spherical shell piezoelectric transducer

Optical path adjustable pipe phase holdup detection system and method

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