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Improved narrow-channel internal flow measurement device

An improved technology for flow measurement, which is applied in the direction of measuring device, fluid velocity measurement, velocity/acceleration/shock measurement, etc., to achieve the effect of convenient measurement, reduced space occupation and reduced impact

Inactive Publication Date: 2017-11-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no device that can simultaneously measure the flow velocity and flow direction inside a narrow channel with little influence on the flow field

Method used

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  • Improved narrow-channel internal flow measurement device
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  • Improved narrow-channel internal flow measurement device

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0022] see figure 1 , the improved narrow channel flow measurement device disclosed in the present invention includes a Pitot tube 6 and a differential pressure transmitter 5 connected to the Pitot tube 6; the Pitot tube 6 is composed of a static pressure detection tube 3 and a total pressure detection tube 4 , one end of the static pressure detection tube 3 extends into the channel to be tested, the other end is connected to the low pressure end of the differential pressure transmitter 5, one end of the total pressure detection tube 4 extends into the channel to be tested, and the other end is connected to the differential pressure transmitter Connected to the high voltage side of device 5. The pipe section of the static pressure detection tube 3 extending to the channel to be tested and th...

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Abstract

The invention discloses an improved narrow-channel internal flow measurement device and belongs to the technical field of fluid flow measurement devices in a narrow channel. In the invention, through the design of a Pitot tube, the flow velocity and flow direction of fluid in a channel can be measured; and a total pressure detection tube and a static pressure detection tube of the Pitot tube are respectively connected with a high pressure end and a low pressure end of a differential pressure transmitter, the flow velocity of the fluid in the channel is determined by the magnitude of readings of the differential pressure transmitter, and the flow direction is determined by the positive and negative number of the readings. The improved narrow-channel internal flow measurement device is simple in overall structure and convenient in processing, and has less impact on the flow field itself in the channel.

Description

technical field [0001] The invention belongs to the technical field of fluid flow measurement devices in narrow passages, and in particular is an improved flow measurement device in narrow passages. Background technique [0002] In the narrow channel inside the control rod drive mechanism (CRDM) and other equipment, due to the different heating surfaces attached to the fluid, under the action of natural convection, etc., the flow in the same channel may appear in the opposite direction, and the flow inside the channel may be obtained Flow velocity and flow direction are the key to the analysis of flow and heat transfer in the channel. [0003] Due to the particularity of the Pitot tube, which is widely used in the field of flow velocity measurement, the device itself may have a great influence on the flow field in the narrow channel. So far, there is no device that can simultaneously measure the flow velocity and flow direction inside a narrow channel with little influence ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/165G01P13/00
CPCG01P5/165G01P13/00
Inventor 王跃社刘刚陈涛尚阳
Owner XI AN JIAOTONG UNIV