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Tracing particle high-speed jettison device in waterflow field particle imaging velocity measuring system

A particle imaging velocimetry and particle tracking technology, which is applied in measurement devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc., can solve the problems of inability to perform measurement and cannot meet the requirements of PIV imaging test, and achieves simple structure, Stable performance and easy maintenance

Inactive Publication Date: 2008-02-20
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] The purpose of the present invention is to provide a high-speed delivery device for tracer particles in a water flow field particle imaging velocimetry system, which solves the problem that the background technology cannot meet the PIV imaging test requirements when the tracer particles are placed in a high-speed, closed water flow field environment , technical problems that make measurements impossible

Method used

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  • Tracing particle high-speed jettison device in waterflow field particle imaging velocity measuring system
  • Tracing particle high-speed jettison device in waterflow field particle imaging velocity measuring system

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Embodiment Construction

[0028] The present invention is an instrument for flow field display and analysis, which uses the movement of tracer particles placed in the flow field to characterize the fluid movement, by imaging the tracer particles, and after the image passes through correlation operations, it can be obtained Measure the flow velocity and flow field distribution of the flow field. When the measured flow field is a high-speed closed water flow field, it is necessary to use a high-speed tracer particle delivery device to complete particle delivery. Specifically, the present invention is used to orderly and rapidly inject tracer particles into the measured flow field.

[0029] Referring to FIG. 1 , the present invention is mainly composed of a power unit, a connector 4 , an excitation device and a connector 13 . The power source of the power device is the drive pump 1, and the drive pump 1 is preferably a hydraulic pump. The maximum air pressure provided by the air compressor can generally...

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Abstract

The present invention relates to a high-speed throwing-in device of trace particles in the water-flow field particle imaging velocity-measuring system. The front end of its excitation device is connected with connecting head, the power device is connected with the excitation device by means of connector. Said power device includes drive pump and drive rod which is connected with drive pump and is placed in the drive cylinder, another end of said drive rod is connected with connector. The excitation device includes excitation cavity and piston placed in the excitation cavity, the piston rod is the excitation rod, its tail end is connected with connector. Besides, said excitation device also includes the components of spring charging hole and valve, etc.

Description

technical field [0001] The invention belongs to the field of water flow field measuring instruments, and is a high-speed tracer particle delivery device, which is mainly used for rapidly dropping water flow field tracer particles into the measured water flow field for flow field display and analysis. Specifically relates to a high-speed delivery device for tracer particles in a water flow field particle imaging velocity measurement system. Background technique [0002] Particle image velocimetry technology, referred to as PIV, is an emerging transient flow field measurement technology at present. The result is also the response of the transient state of the flow field, therefore, PIV plays an important role in measuring the rapidly changing flow field. PIV can be used to measure the flow field of gas and liquid, and different tracer particles need to be used when measuring different flow fields. In water flow field testing, PIV technology has been widely used to study comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/20
Inventor 阮驰白永林孙传东王屹山
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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