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Novel gas flow velocity and flow measurement system

A gas velocity and flow measurement technology, applied in fluid velocity measurement, velocity/acceleration/impact measurement, measurement devices, etc., can solve the problems of reducing measurement accuracy, affecting gas flow velocity, etc., and achieve the effect of low power demand.

Pending Publication Date: 2022-03-18
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional gas flow meter or gas flow meter is usually a contact mechanical structure. For example, by collecting the rotational speed signal of the flow meter rotor, the gas flow rate information is obtained through processing and calculation. This contact structure has a certain barrier to the flowing gas. To a certain extent, it will affect the flow rate of the gas and reduce the measurement accuracy

Method used

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  • Novel gas flow velocity and flow measurement system
  • Novel gas flow velocity and flow measurement system
  • Novel gas flow velocity and flow measurement system

Examples

Experimental program
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Effect test

example 1

[0026] A new type of gas velocity flow measurement system, the overall structure is as follows figure 2 shown. figure 2 Shielding body 2, shielding cover 3, collimation hole 4 and image 3 Inner chamber 11, cylindrical 60 The Co radiation source 12 constitutes an ionizing radiation source and its collimation shielding module. The shielding upper cover 3 is placed on the top of the shielding body 2 to prevent the radiation in the inner chamber 11 from leaking out, such as figure 2 As shown, when working, the shielding upper cover 3 can be opened and the radioactive source is placed in the limit groove at the bottom of the inner chamber 11, as image 3 shown. figure 2 The gas guide tube 8, the flange assembly 9, the RuFeB magnet 7 and Figure 5 The electrodes 15 in constitute the measurement module. The gas guide tube 8 is fixed in the middle of the upper and lower parallel fixed components 1 through the support frame 10 and the support column 6 and kept horizontal. Th...

example 2

[0029] A new type of gas velocity flow measurement system, the structure is basically the same as that described in Example 1, the difference is that the ionizing radiation source used is an X-ray tube 13, and the X-ray tube can be directly embedded in the shielding body 2 of the device and kept The X-ray window 14 is aligned with the collimation hole 4, such as Figure 4 shown. X-rays are emitted from the X-ray window 14 and collimated to the side of the gas guide tube 8 through the collimation hole 4 . By adjusting the X-ray tube to output different energies, X-rays with different intensities can be adapted to different measurement gases.

example 3

[0031] A new type of gas flow rate and flow measurement system, the structure is basically the same as that described in Example 1, the difference is that the magnetic field generating device that provides the magnetic field is an electromagnet, by adjusting the excitation voltage, the size of the magnetic field can be changed to change the Hall voltage sizes to meet different measurement ranges.

[0032] The present invention is realized according to following measuring principle:

[0033] Such as figure 1 , the magnetic induction intensity of two magnets in the vertical direction of the gas guide tube is magnetic field. When the gas medium is at a velocity When flowing through a gas duct with a cross-sectional width of b and a height of h, due to the ionization of gas atoms under the irradiation of ionizing radiation, electrons and positive ions are respectively subjected to the Lorentz force, and the force is:

[0034]

[0035] In the formula is the velocity of m...

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Abstract

The invention relates to a novel gas flow velocity and flow measuring system, and belongs to a measuring system for measuring and analyzing by using ionizing radiation and an electromagnetic field. The device mainly comprises an ionization radiation source, a magnetic field generation device and a signal acquisition and processing assembly. The device can be widely applied to measurement of gas flow velocity and flow in various industries.

Description

Technical field: [0001] The invention belongs to the technical field of measuring and analyzing by using ionizing radiation and electromagnetic field, and in particular relates to a novel gas velocity and flow measuring system. Background technique [0002] Gas flow rate and flow measurement is widely used in all aspects of social production and life. In industrial automation production, energy industry measurement links, and scientific experiments, people often need to use gas flow rate and flow information to complete automatic control, economic accounting, quantitative analysis, etc. important link. Therefore, the accurate measurement of the gas flow rate is very important. The traditional gas flow meter or gas flow meter is usually a contact mechanical structure. For example, by collecting the rotational speed signal of the flow meter rotor, the gas flow rate information is obtained through processing and calculation. This contact structure has a certain barrier to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/08G01F1/58
CPCG01P5/08G01F1/58
Inventor 宋玉收陈声强侯英伟赵云龙黄丽萍
Owner HARBIN ENG UNIV
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