Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Probe fixed-distance control device for eddy current flaw detection of special-shaped pipe fitting and control method of probe fixed-distance control device

A control device, eddy current flaw detection technology, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as low detection accuracy

Pending Publication Date: 2022-06-28
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a probe fixed for eddy current flaw detection of special-shaped pipe fittings for the technical defect of low detection accuracy due to the different distances between different positions of the pipe and the probe during the flaw detection of special-shaped thin-walled pipes. distance control device

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Probe fixed-distance control device for eddy current flaw detection of special-shaped pipe fitting and control method of probe fixed-distance control device
  • Probe fixed-distance control device for eddy current flaw detection of special-shaped pipe fitting and control method of probe fixed-distance control device
  • Probe fixed-distance control device for eddy current flaw detection of special-shaped pipe fitting and control method of probe fixed-distance control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A probe distance control device for the pipe under test, such as figure 1 and figure 2 As shown in the figure, it includes a fixed frame 1, a horizontal rod 2 installed on the fixed frame 1 through a mounting assembly, a vertical rod 3 vertically installed on the free end of the cross rod 2, a vertical rod 3 installed on the The roller 4 on the free end of the horizontal bar 2 and the probe clamp 5 installed on the lower end of the vertical bar;

[0045] Adjustable vertical installation means that the vertical rod 3 can be adjusted vertically in two dimensions, the horizontal direction and the height direction, and the probe clamp 5 and the probe 18 installed thereon are located directly below the horizontal rod 2 .

[0046] The installation assembly includes a guide rail 7, a guide rail groove 8 and a compression spring 14; the guide rail 7 and the compression spring 14 are installed in the inner cavity 6 of the fixing frame 1; the guide rail groove 8 is arranged on ...

Embodiment 2

[0048] This embodiment is based on the probe distance control device in Embodiment 1, and introduces its control method.

[0049] like Figure 11 As shown, the detection coil 20 is wound around the to-be-measured part of the pipe material 19 to be measured;

[0050] Adjust the position of the tested pipe 19 so that the roller 4 is always in contact with the outer wall of the tested pipe 19 when the tested pipe 19 rotates along the central axis;

[0051] According to the shape and size of the pipe material 19 to be tested, adjust the horizontal position and height position of the vertical rod 3 to the appropriate detection position; install the probe 18 on the probe clamp 5 and adjust the distance between the probe clamp 5 and the vertical rod 3 according to the angle of the side to be tested the angle between

[0052] The pipe material 19 to be tested rotates along the central axis, and the probe 18 performs flaw detection on the entire circumferential direction of the pipe ...

Embodiment 3

[0055] This embodiment is based on Embodiment 1, and introduces its detailed structure.

[0056] like image 3As shown, the fixing frame 1 includes a base 1-1, a vertical part 1-2 and a horizontal part 1-3; the base 1-1 is fixed on a flat position such as a desktop or the ground, so that the horizontal part 1-3 remains stable and level;

[0057] One end of the horizontal portion 1-3 away from the vertical portion 1-2 is open and extends inward to form an inner cavity 6 with a square cross-section; the left and right side walls of the inner cavity 6 are respectively provided with guide rails 7;

[0058] like Figure 4 As shown, the outer edge of the cross-section of the cross-bar 2 is square and matches the inner cavity 6; the left and right sides of the cross-bar 2 are respectively provided with guide rail grooves 8; the guide rail grooves 8 are matched with the guide rails 7, so that the cross bar 2 and the horizontal parts 1-3 are horizontally slidably installed;

[0059...

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

No PUM Login to View More

Abstract

The invention discloses a probe fixed-distance control device for a detected pipe fitting and a control method of the probe fixed-distance control device. The probe fixed-distance control device comprises a fixed frame, a cross rod which is horizontally and slidably mounted on the fixed frame through a mounting assembly, a vertical rod which is adjustably and vertically mounted at the free end of the cross rod, a roller which is rotatably mounted at the free end of the cross rod and a probe clamp which is mounted at the lower end of the vertical rod; the mounting assembly comprises a guide rail and a compression spring which are mounted in the inner cavity of the fixing frame, and a guide rail groove formed in the cross rod; the guide rail groove is matched with the guide rail, so that the cross rod is slidably mounted in the inner cavity; the compression spring always applies pushing force to the cross rod, so that the roller always contacts with the measured pipe fitting during measurement. According to the probe fixed-distance control device, in the eddy current flaw detection process, the roller is always in contact with the tested sample through the thrust applied by the spring, so that the distance between the probe and the surface of the tested sample is kept unchanged, and the detection precision is not influenced by the change of the distance between the probe and the sample.

Description

technical field [0001] The invention relates to the technical field of eddy current flaw detection of pipe fittings, in particular to a probe distance control device for eddy current flaw detection of special-shaped pipe fittings and a control method thereof. Background technique [0002] Eddy current testing is often used in military industry, aviation, railway, etc. It is widely used in online and offline flaw detection of various metal pipes, rods, wires, wires and other profiles. It has high detection of surface cracks, dark lines, slag inclusions and open cracks. sensitivity. Eddy current testing technology can be divided into three types according to the mutual position of the detection coil and the specimen Thin-walled tubing, so it can only be inspected with a drop coil. [0003] When using the placed coil for flaw detection of special-shaped thin-walled pipes, the detection coil is placed in the probe, the probe remains stationary, and the pipe rotates in front of...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/9093G01N27/9013
CPCG01N27/9093G01N27/902
Inventor 张毅李昂吴福陈开媛高蔚
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products