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Fixture system capable of dynamically testing electromagnetic parameters of powdery material

A technology of electromagnetic parameters and fixture system, which is applied in the direction of magnetic performance measurement, etc., can solve the problems of no fixture system and high requirements for the fixture system, and achieve the ideal effects of pollution prevention, repeatability and stability

Active Publication Date: 2018-07-24
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is very little demand for dynamic testing of the electromagnetic parameters of powdered materials, and at the same time, electromagnetic parameter testing has high requirements on the fixture system. Fixture system for measuring electromagnetic parameters

Method used

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  • Fixture system capable of dynamically testing electromagnetic parameters of powdery material
  • Fixture system capable of dynamically testing electromagnetic parameters of powdery material
  • Fixture system capable of dynamically testing electromagnetic parameters of powdery material

Examples

Experimental program
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Embodiment 1

[0056] This embodiment provides a fixture system capable of dynamically testing the electromagnetic parameters of powdery materials. The fixture system includes a closed loop system and a free space method test system; the closed loop system is used to realize the closure of the powdery material to be tested. Circulation, so that the powdery material to be tested is in a moving state; the free space method testing system is used to test the electromagnetic parameters of the powdery material in a moving state.

[0057] The closed circulation system includes a cyclone separator 10, an ejector 3, an adjustment valve 8, a sample channel 7, a recovery valve 4, a recovery bag 5 and an air compressor 1;

[0058] The cyclone separator 10 is used to separate the wind-powder mixture, and provides the powdery material to be tested for the sample channel 7; the sample channel 7 is used to guide the powdery material to be tested into the detection area of ​​the antenna 6 The ejector 3 is u...

Embodiment 2

[0069] This embodiment provides a measurement method capable of dynamically testing the electromagnetic parameters of powdered materials. The method uses the fixture system described in Embodiment 1, and the method is specifically:

[0070] Close the adjustment valve 8 at the lower part of the cyclone separator, and pour the powdered material into the cyclone separator 10 from the exhaust port 11 at the upper part of the cyclone separator (in this embodiment, the sample addition amount can be: 50-70mL / time) , the sample is gathered to the powder drop port 9 on the upper part of the adjustment valve;

[0071] Use the filter bag 12 to seal the exhaust port 11 on the top of the cyclone separator, close the recovery valve 4 at the opening of the recovery bag, open the air compressor 1, and adjust the compressed air pressure (in this embodiment, the air pressure is 0.04~0.08 MPa), open the air valve 2 at the outlet of the air compressor, the compressed air enters the ejector 3, and...

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Abstract

The invention mainly belongs to the technical field of using microwave to test the electromagnetic parameters of a powdery material in a motion state and particularly relates to a fixture system capable of dynamically testing the electromagnetic parameters of a powdery material. The fixture system comprises a closed circulation system and a free space method test system. The closed circulation system is used for realizing a closed circulation of a powdery material to be tested to make the powdery material to be tested in motion. The free space method test system is used for testing the electromagnetic parameters of the powdery material in motion. The system is a closed space, and the powdery material can only circulate in the system and cannot escape to pollute an environment. The materialcirculates in the system, and a test can be completed with a small amount of material sample.

Description

technical field [0001] The invention mainly belongs to the technical field of using microwaves to test the electromagnetic parameters of dynamic powder materials, and in particular relates to a fixture system capable of dynamically testing the electromagnetic parameters of powder materials. The fixture system can simulate the shape of powder materials in a moving state and can dynamically Test the electromagnetic parameters of powdered materials. Background technique [0002] At present, most of the tests on the electromagnetic parameters of materials are carried out in a static state using the transmission method and the reflection method of the free space method. It is rare to test the electromagnetic parameters of materials in motion, and mainly focus on measuring the moisture content of various grains with microwaves, such as wheat and corn. However, in terms of dynamic testing of electromagnetic parameters of materials, most of them are based on the measurement of gran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12
CPCG01R33/12
Inventor 牛玉广彭范董恩伏邱天杜鸣张楠韦中华王勇罗桓桓周桂平张田婷
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)