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A Method for Measuring Bubble Volume in Liquid Environment

A technology of bubble volume and liquid environment, applied in the direction of measuring devices, instruments, optical devices, etc., to achieve reliable operation, reasonable structure, and stable work

Active Publication Date: 2019-01-08
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Therefore, there is a large error in this method

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  • A Method for Measuring Bubble Volume in Liquid Environment
  • A Method for Measuring Bubble Volume in Liquid Environment
  • A Method for Measuring Bubble Volume in Liquid Environment

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Embodiment Construction

[0018] Below in conjunction with specific embodiment the present invention is described in further detail.

[0019] When studying the characteristics of underwater welding bubbles, it is necessary to observe the bubble volume and shape in real time. According to the surveying and mapping method shown in the present invention, the following technical scheme is adopted to more accurately survey and map the volume of the bubbles generated in the underwater welding process:

[0020] The test device is mainly composed of a micro-focus X-ray source, a special welding water tank, an image intensifier, a high-speed camera and a computer. The micro-focus X-ray source and the image intensifier are placed on both sides of the welding water tank, and the direction of the optical path formed between them perpendicular to the welding direction. First, place a thin-walled ping-pong ball in the welded water tank as a reference specimen. Then start the camera to obtain pictures.

[0021] Si...

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Abstract

The invention relates to the technical field of underwater testing, in particular to a method for measuring the volume of bubbles in a liquid environment, which is characterized in that it includes: allowing the X-rays generated by the X-ray source to penetrate the liquid container, and generating an image in an image intensifier; The high-speed camera collects the image in real time, and uses the computer to calibrate the gray value of the image; according to the actual size of the reference specimen and the gray value of the image, the corresponding relationship between the gray value and the thickness under this condition is obtained as a reference; in the same X-ray Under transmission conditions, obtain the image of the measured air bubbles produced in the liquid holding container under X-ray irradiation, and calculate the area of ​​each region with different gray values ​​in the image; refer to the gray value obtained from the reference sample and The corresponding relationship of thickness, determine the thickness value of bubbles in different regions, calculate the volume of each region, and measure the volume of bubbles. The present invention has significant advantages such as reasonable structure, reliable operation, stable work, and easy operation.

Description

technical field [0001] The invention relates to the technical field of underwater testing, in particular to a method for measuring the volume of bubbles in a liquid environment. Background technique [0002] In the process of underwater environment testing, it is often necessary to measure the volume of air bubbles in the liquid environment, and extract relevant data from it, so as to facilitate the development of follow-up work. Traditional gas collection methods can accurately measure the sum of the volumes of a series of bubbles, but it is difficult to distinguish the volume of a single bubble. However, in some specific applications, the volume of a single bubble is required rather than the sum of volumes of a series of bubbles. Through the industrial camera, technicians can obtain the image of the bubble, and based on this, the bubble is approximated as a spherical shape, and the volume of the bubble is estimated by the area of ​​the bubble. In fact, the shape of the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 郭宁杜永鹏冯吉才付云龙徐昌盛陈昊
Owner HARBIN INST OF TECH AT WEIHAI