A non-destructive testing device and testing method based on electric field fingerprint method
A non-destructive testing, electric field fingerprinting technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problems of high labor and material resources, high testing cost, and immature implementation, and achieves reduction of measurement cost, improvement of measurement accuracy, Avoid the effect of long laying
Active Publication Date: 2017-05-31
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, at this stage, the measurement of pipeline corrosion using the electric field fingerprint method generally exists in the theoretical research stage and has not yet been implemented maturely.
At the same time, the pipelines are often laid in relatively remote places. It takes a lot of manpower and material resources to inspect the pipelines, and it is necessary to lay corresponding lines for assistance, and the inspection cost is high.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0087] Figures 1~8 It is the best embodiment of the present invention, below in conjunction with attached Figures 1~8 The present invention will be further described.
[0088] like figure 1 As shown, the nondestructive testing device based on the electric field fingerprint method includes a section of pipeline 2 to be tested, and a voltage collection area 3 is set on the surface of the pipeline to be tested 2. One side of the voltage collection area 3 is provided with a reference plate 5 covering the surface of the pipeline 2 to be tested, and a plurality of capture electrodes 4 are arranged on the voltage collection area 3 and the reference plate 5, between two adjacent capture electrodes 4 same distance between. An electrode sleeve 1 is respectively arranged on the outer ends of the voltage collection area 3 and the reference board 5 , and a current signal is applied to the pipeline 2 to be tested through the two electrode sleeves 1 , and the current signal flows throug...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a nondestructive detection device and method based on an electric-field fingerprinting method, and belongs to the field of pipeline nondestructive detection technical equipment. The nondestructive detection device comprises a to-be-detected pipeline (2) and is characterized in that a plurality of capture electrodes (4) are uniformly arranged on the to-be-detected pipeline (2); a current input unit for inputting excitation current signals sleeves each of the two outer ends of the capture electrodes (4); a control unit respectively connected with the current input unit and the capture electrodes (4) is arranged simultaneously; and the detection method comprises a charging and discharging control process for controlling a power supply module by a controller, and a signal acquiring and sending process for controlling a signal acquisition module. By means of the nondestructive detection device and method based on the electric-field fingerprinting method, the high-precision and nondestructive detection of the corrosion condition of a transportation pipeline is realized; simultaneously, the excess line laying is avoided; and the measurement cost is reduced.
Description
technical field [0001] A nondestructive testing device and testing method based on an electric field fingerprint method belong to the technical field of pipeline testing. Background technique [0002] In the prior art, pipeline corrosion is the main cause of accidents in the field of oil transportation, and its specific forms can be divided into: uniform corrosion, localized corrosion, pitting corrosion, weld corrosion and erosion, etc. At present, the resistance probe method and polarization probe method are widely used to monitor the corrosion of pipelines online, but these methods can only detect indirect uniform corrosion, and have damage to the pipe wall. It can't do anything about the extremely harmful localized corrosion. [0003] Compared with the existing technology, using the electric field fingerprint method to measure pipeline corrosion theoretically has the advantages of direct measurement, high accuracy and reliability, and strong adaptability, and has no dama...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/82H02J7/35
Inventor 陈健飞王安泉樊户伟蒋文春张兰王宜金董军强陈丽娜刘海波
Owner CHINA PETROLEUM & CHEM CORP