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Terahertz quasi-optical detection device and non-metallic pipeline detection system and method

A detection device, a technology of terahertz detectors, applied in measurement devices, optical testing of flaws/defects, material analysis by optical means, etc., to achieve the effect of improving the accuracy of recognition

Pending Publication Date: 2021-07-16
BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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Problems solved by technology

Terahertz waves are penetrable to non-metallic materials such as polyethylene, so it is a better choice to use terahertz to detect them, but there are no reports of related technical applications so far

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  • Terahertz quasi-optical detection device and non-metallic pipeline detection system and method

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Embodiment Construction

[0045] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention.

[0046] The embodiment of the invention discloses a terahertz quasi-light detection device, which can realize non-destructive detection of the internal structure of non-metallic materials such as PE.

[0047] The terahertz quasi-photodetection device includes a primary radiation source module 1 , a frequency multiplier module 2 , a cylindrical lens antenna 4 , a terahertz detector 5 , a signal control processing module 6 and a radiation antenna module 9 .

[0048] The primary radiation source module 1 is a primary radiation source for generating terahertz fundamental wave radiation. The radiation module described here adopts an IMPATT diode radiation mod...

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Abstract

The invention discloses a terahertz quasi-optical detection device for realizing nondestructive detection on internal structures of non-metallic materials such as PE and further provides a non-metallic pipeline detection system and method for realizing detection on a non-metallic pipeline. The non-metallic pipeline detection system comprises a terahertz quasi-optical detection device, an upper computer and a displacement control device. The terahertz quasi-optical detection device comprises a primary radiation source module, a frequency multiplier module, a cylindrical lens antenna, a terahertz detector, a signal control processing module and a radiation antenna module. The terahertz technology is adopted, non-metallic pipeline materials such as PE can be easily penetrated, the internal structure of the nonmetal pipeline materials can be detected, the detection device and system can distinguish millimeter-sized defects, the wavelength is far larger than that of rays, photon energy is low, and ionizing radiation to the human body is avoided.

Description

technical field [0001] The invention belongs to the technical field of terahertz non-destructive testing, and in particular relates to a non-destructive testing device for non-metallic pipelines. Background technique [0002] Non-metallic pipes such as polyethylene (PE) / polypropylene (PP) are ideal pipes to replace ordinary metal pipes due to their high strength, corrosion resistance, and non-toxicity. They are widely used in water supply, energy and other fields. [0003] my country's non-metallic pipelines are developing rapidly, and the utilization rate is constantly increasing. According to statistics, in 2015 alone, the newly added use of polyethylene (PE) gas pipes in my country has exceeded 1.3 million tons, and its market demand is still growing rapidly. At present, the polyethylene materials commonly used as gas pipelines are mainly PE80 and PE100. [0004] In the production or use of non-metallic pipes, in order to ensure safety, it is necessary to conduct qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95G01N21/88
CPCG01N21/9515G01N21/8806G01N2021/9518
Inventor 郑中信谯梁
Owner BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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