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Differential pressure type self-adaptive flow adjusting method for particulate matter online monitoring through beta-ray method

A technology for flow regulation and particulate matter, applied in the direction of analyzing materials, instruments, etc., can solve the problems of large volume, expensive mass flow controllers, and high research and development costs, and achieve the effect of reducing flow

Pending Publication Date: 2022-06-24
JIANGSU SKYRAY INSTR
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Problems solved by technology

[0002] The flow rate of the β-ray method particle on-line monitoring equipment directly participates in the calculation of the concentration, so there is a high requirement for the accuracy of the flow rate. The mass flow controller is widely used in various fields because of its accurate measurement and stable control of the flow rate. Among all kinds of gas monitoring equipment, mass flow controllers are expensive, have high research and development costs, and are large in size, which is not conducive to the development of portable equipment. Therefore, it is necessary to find more convenient ways and methods

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  • Differential pressure type self-adaptive flow adjusting method for particulate matter online monitoring through beta-ray method
  • Differential pressure type self-adaptive flow adjusting method for particulate matter online monitoring through beta-ray method

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Embodiment Construction

[0026] The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0027] According to an embodiment of the present invention, the present invention proposes a differential pressure adaptive flow adjustment method for on-line monitoring of particulate matter by beta ray method, including:

[0028] During the process of the sample gas entering the valve body in the flow control valve, the sample gas monitoring component monitors the sample air temperature, humidity and air pressure data in real time and sends it to the analysis control component. Adjust the flow and send the instruction to the motor adjustment assembly, the motor adjustment assembly adjusts the motor position in the motor adjustment assembly according to the instruction requirements to change the flow rate through the valve body. After the flow rate is changed, the sa...

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Abstract

The invention discloses a differential pressure type self-adaptive flow adjusting method for particulate matter online monitoring through a beta-ray method. The motor adjusting assembly is used for receiving and analyzing an instruction of the control assembly, adjusting the position of the motor and controlling the flow; and when the actual flow reaches the preset flow, the motor stops rotating, the flux area of the valve is adjusted to be unchanged, the flow is kept constant, the cost is greatly reduced through the simpler structure and method, and the interchangeability and the maintenance efficiency are improved.

Description

technical field [0001] The invention relates to the field of on-line monitoring of atmospheric particulate matter, in particular to a differential pressure adaptive flow regulation method for on-line monitoring of particulate matter by beta ray method. Background technique [0002] The flow rate of the β-ray particle on-line monitoring equipment is directly involved in the calculation of the concentration, so there is a high requirement for the accuracy of the flow rate. The mass flow controller is widely used in various However, the mass flow controller is expensive, the development cost is high, and the volume is large, which is not conducive to the research and development of portable equipment, so it is necessary to find a simpler way and method. SUMMARY OF THE INVENTION [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. The present invention proposes a differential pressure adaptive flow regulation method...

Claims

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Application Information

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IPC IPC(8): G01N15/00
CPCG01N15/00
Inventor 刘召贵鲁晨阳栾旭东薛鹏闫莹曹冲乔明利方华炳
Owner JIANGSU SKYRAY INSTR
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