Sacrificial anode core breaking detection system and method based on passing eddy current

A sacrificial anode and detection system technology, applied in the direction of material magnetic variables, etc., can solve the problem of consuming the detection cycle of the material to be inspected, and achieve the effects of accurate and precise testing, efficient detection, and high safety factor

Inactive Publication Date: 2014-04-02
GUOBIAO BEIJING TESTING & CERTIFICATION CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes a way to detect metal objects hidden inside or attached to certain parts made from corrosion resistant material called sacrificial Anodes (SA). It uses magnetic induction techniques for measuring changes caused when currents flow within them. These methods are highly accurate but they require expensive tools like probes. However these new technologies have several advantages over existing ones such as being more cost-effective and safer than traditional methods while also allowing real time monitoring during manufacture processes.

Problems solved by technology

This patents discuss how certain types of metals have been identified as potential sources of damage caused from environmental pollutants due to their high risk of rust formation over longer periods of service without replacing them if they were damaged before installation. Current techniques involve destructively inspecting these objects after production, leading to wasted resources and increased costs associated with maintenance work. There is currently no reliable way to detect any signs of deterioration early enough while minimizing interference between neighboring components.

Method used

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  • Sacrificial anode core breaking detection system and method based on passing eddy current
  • Sacrificial anode core breaking detection system and method based on passing eddy current
  • Sacrificial anode core breaking detection system and method based on passing eddy current

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specific Embodiment

[0055] The following is a specific embodiment of the present invention: take the detection of a diamond-shaped extruded zinc anode strip of 16×22 mm as an example.

[0056] This type of extruded zinc anode is strip-shaped, its cross-section is diamond-shaped, and its size conforms to the national standard GB / T17848-1999. The tested sacrificial anode sample is type B, with a long axis of 22.23 mm, a short axis of 15.88 mm, a length of about 1 m, and a broken core defect in the middle.

[0057] First, process an artificial defect at the iron core at the end (drill a hole along the axial direction, the diameter of the hole is 1mm, and the depth is 30mm). Since the thickness of the high-purity zinc coated outside the iron core of this type of anode is relatively large, the selected A lower frequency should be selected when detecting the frequency. Here, 4kHz is selected as the detection frequency. Whether the detection frequency meets the detection requirements can be verified by

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Abstract

The invention discloses a sacrificial anode core breaking detection system and a method based on passing eddy current. The system comprises a roller way used for rectifying and supporting a sacrificial anode, an eddy current detector and a multi-freedom-degree probe fixing device capable of vibrating in a z axis direction, wherein the eddy current detector is provided with a passing eddy current probe; a through hole allowing the detected sacrificial anode to pass through is formed in the center of the eddy current probe; a probe follow-up mechanism capable of achieving translation along an x axis and rotation along a z axis in a plane perpendicular to an axial direction of the eddy current probe is arranged on the multi-freedom-degree probe fixing device; and the eddy current probe is arranged on the probe follow-up mechanism of the multi-freedom-degree probe fixing device. The detection method can efficiently and precisely achieve on-line detection of the sacrificial anode.

Description

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Claims

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Application Information

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Owner GUOBIAO BEIJING TESTING & CERTIFICATION CO LTD
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