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Endoscopic measurement method for internal flow field of valve

A technology of internal flow field and measurement method, applied in the field of experimental measurement in fluid mechanics, to achieve the effect of convenient operation and compact structure

Active Publication Date: 2019-08-20
CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex internal structure of the valve, the traditional PIV measurement technology cannot directly measure its internal flow. Therefore, the current research on the internal flow characteristics of the valve mainly relies on numerical simulation technology, and there are relatively few studies on experimental measurement, and numerical results are urgently needed. Verified by means of experimental measurements

Method used

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  • Endoscopic measurement method for internal flow field of valve

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Embodiment Construction

[0037] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0038] Such as figure 1 and figure 2 As shown, the endoscopic measurement method of the valve internal flow field in this embodiment includes a valve body 2, an outlet 1 is arranged above one end of the valve body 2, an inclined surface is arranged on the valve body 2 beside the outlet 1, and a platform 5 is installed on the inclined surface. A transparent window 4 is installed on the top surface of the platform 5, and the other end of the valve body 2 is provided with an endoscope 8, and the endoscope 6 is loaded into the endoscope 8, and the endoscope 6 is connected to a PIV camera;

[0039] The specific measurement method includes the following steps:

[0040] Consists of two parts:

[0041] The first part is laser irradiation: the purpose of this part is to introduce the laser sheet 3 generated by the PIV system into the valve cavi...

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Abstract

The invention relates to an endoscopic measurement method for the internal flow field of a valve. A PIV (Particle Image Velocimetry) technology is combined with an endoscope to measure the internal flow field of the valve. A hole groove sealed and covered with transparent glass is formed in the surface of the valve, so that a laser sheet of a PIV system can irradiate the internal of the valve, andillumination of the internal area of the valve is realized; and an endoscope hole is arranged in the downstream of a valve outlet, so that the endoscope is extended into an outlet pipe, and connectedwith a PIV camera to measure the internal flow field.

Description

technical field [0001] The invention relates to the technical field of experimental measurement in fluid mechanics, in particular to an endoscopic measurement method for a flow field inside a valve. Background technique [0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. It is a device that enables or stops the flow of media (liquid, gas, powder) in piping and equipment and controls its flow. [0003] The flow channel structure and different opening states of the valve will cause changes in the internal flow field of the valve, as well as some complex vortex systems. During the opening and closing process of the valve, parameters such as flow rate and pressure will change, which will cause vibration, impact, and noise. And other phenomena, not only affect the valve control, but also may lead to valve failure, damage or increased noise. For these reasons, it is necessary to conduct in-depth research on the flow field i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 徐良浩张传鸿曹彦涛张国平陆芳陆赟梁赟
Owner CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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