Waveguide rod fixing device for acoustic emission inspection of pipeline
A technology for fixing devices and waveguides, applied to measuring devices, material analysis using sound waves/ultrasonic waves/infrasonic waves, instruments, etc., to improve test accuracy and ensure stability
Inactive Publication Date: 2015-06-24
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
In addition, the existing waveguide fixing devices are only suitable for fixing waveguides with a single diameter, and in scientific research and engineering applications, waveguides with various diameters will be used according to the needs of signal acquisition, so a method suitable for different diameters is required. Fixtures for pipes of different diameters that can be connected to waveguides of different diameters
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[0011] Its structure mainly includes a main body (1), a replaceable waveguide connecting bolt (2) and two adjustable pipe connecting pieces (3). It is characterized by:
[0012] The main body (1) is composed of a cuboid (11) with a through hole and two symmetrically distributed T-shaped brackets (12). The cuboid (11) of the main body is designed with three sections of holes inside. From the direction of the front view, from top to bottom, the upper end hole (111) has an internal thread, which is matched with the replaceable waveguide connecting bolt (2), and the middle hole (112 ), the lower end hole (113) is a light hole, and the aperture of the lower end hole is larger than the aperture of the middle hole, and the coupling agent required for the acoustic emission test is placed in the lower end hole. Two T-shaped brackets (12) are respectively fixed on two opposite sides of the cuboid, and the T-shaped brackets are in a cuboid structure. At the ends of the two free ends of...
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The invention discloses a waveguide rod fixing device for acoustic emission inspection of a pipeline. The waveguide rod fixing device conveniently realizes that waveguide rods with different diameters are firmly installed in pipelines with different pipe diameters. The waveguide rod fixing device mainly comprises a main body, a replaceable waveguide rod connecting bolt and two adjustable pipeline connecting members, wherein the waveguide rod connecting bolts with different internal diameters can be replaced according to the diameter of the waveguide rod, and the openness of the pipeline connecting members is regulated according to the diameter of a pipeline to be measured, thus the waveguide rods with different diameters are conveniently and firmly connected to pipelines with different pipe diameters. The waveguide rod fixing device is simple in structure and strong in practicability, and is capable of ensuring that the waveguide rod can be in tight contact with the surface of the pipeline through threaded compaction of the waveguide rod and a fixing device; the shaking of the waveguide rod on the pipeline is reduced through the structural design of a magnet connecting member, and finally the stable propagation of an acoustic emission signal is ensured.
Description
technical field [0001] The invention relates to a waveguide rod fixing device for pipeline acoustic emission detection, in particular to a waveguide rod fixing device suitable for pipelines with different diameters. Background technique [0002] As one of the important means of non-destructive testing, acoustic emission testing technology is widely used in pressure vessel testing, pipeline leakage testing, bridge structure testing, etc. At present, when acoustic emission technology is applied to pipelines in special environments (underground, underwater, cryogenic, etc.), in order to solve the problem of inconvenient sensor installation, it is necessary to use a waveguide rod for assistance. One end of the waveguide rod is connected to the surface of the pipeline, and the other end Used to install the sensor, the acoustic emission signal will propagate through the waveguide rod into the acoustic emission sensor. [0003] Retrieving the research and application results of wa...
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IPC IPC(8): G01N29/26
Inventor 曹国梁徐长航陈国明史焕地宁肖
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)