CN210834769U

CN210834769U - Pulse eddy current inspection probe for omnibearing detection of internal defects of small-diameter tube bundle

Info

Publication number: CN210834769U
Application number: CN201920811031.3U
Authority: CN
Inventors: 陶建涛; 王岳飞; 白丽莉; 汤晓锋
Original assignee: Tianjin Yinke Xinchuang Technology Co ltd
Current assignee: Tianjin Yinke Xinchuang Technology Co ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-06-23
Anticipated expiration: 2029-05-31

Abstract

The utility model provides a pulse eddy current test probe of all-round detection small pipe diameter tube bank internal defect, including the aviation plug, transmitting coil, receiving coil, spacer, photoelectric movement original paper, probe shell. A pulse eddy current inspection probe of all-round detection small pipe diameter tube bank defect, can direct application inside the on-the-spot small pipe diameter tube bank, advance at the inside impulse type of pipeline, once remove alright 360 degrees defects inside the small pipe bundle and detect, the inside photoelectric type removal record original paper that is equipped with of probe simultaneously, the probe can be on the PC in the removal record probe removal position. Compared with the existing pulse eddy current detection probe, the position of the defect can be determined more accurately. The operation is simple and convenient, and the efficiency of detecting the pipeline is improved.

Description

Pulse eddy current inspection probe for omnibearing detection of internal defects of small-diameter tube bundle

Technical Field

The utility model belongs to pulse eddy current nondestructive test field especially relates to a pulse eddy current inspection probe of all-round detection small pipe diameter tube bank internal defect.

Background

With the rapid development of the world industry, pipelines have wide application in various fields such as petrochemical industry, ocean engineering and the like, and become an indispensable part in modern industry. In 1980, Waidelich et al applied the pulsed eddy current testing technique to the measurement of the wall thickness and defects of the stainless steel structure, and in the research, the skin depth of the pulsed eddy current in the stainless steel material is given, and in the research, a method for predicting the test voltage signal curve by using the excitation voltage signal curve of the pulsed eddy current test is also provided. In 1993, french researchers b.lebrun and the like performed related detection experiments on a riveted structure of an aircraft by using a differential signal processing method, wherein an excitation device of the research device is a conventional coil, a detection device is a giant magnetoresistance sensor, and the device can be used for exploring the minimum crack defect recognizable by the research device under various working conditions by optimizing and adjusting various parameters. After the device and the detection method are optimized, the sizes of the defect cracks are subjected to related detection research through three physical quantities, namely signal peak values, peak time and signal frequency.

The existing pulse eddy current detection probe for the internal defects of the small-pipe-diameter pipe bundle can detect the internal defects in the detection process, but is limited to detect the defects in one direction only in the detection process or detect the defects of the whole pipe bundle by overlapping to detect the defects. The detection result cannot accurately determine the defect position. The utility model provides an improved pulse eddy current inspection probe can move the distance position of scanning the walking of accurate record more in the probe, and can be through once removing 360 degrees all-round detections of tube bank inside to the accurate definite defective position of operator.

Disclosure of Invention

In view of this, the utility model aims at providing an all-round pulse eddy current test probe that detects small pipe diameter tube bank internal defect to realize more accurate definite defect position, feel with the operation of probe, improve detection efficiency.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides an all-round pulse eddy current testing probe that detects small pipe diameter tube bank internal defect, includes the probe shell, probe shell rear end is equipped with the aviation plug, be equipped with coil, spacer and photoelectric moving element in the probe shell in proper order, aviation plug connection coil and photoelectric moving element, the probe passes through aviation plug connection outside pulse eddy current testing equipment.

Further, the coils include a transmit coil and at least 6 receive coils.

Furthermore, the aviation plug adopts a multi-core plug and is respectively connected with a joint of a coil in the probe and a joint of the photoelectric moving element.

Furthermore, the photoelectric moving element adopts an infrared ray induction photoelectric switch E3F-DS30C4 to approach a diffuse reflection type sensor and is used for recording the moving distance point of the probe inside the tube bundle.

Further, the pulsed eddy current detection device transmits the detected data to the PC in a wireless mode.

Furthermore, the probe shell is made of high-temperature resistant materials.

Further, the front part of the probe is arc-shaped.

Compared with the prior art, an all-round pulse eddy current test probe that detects small pipe diameter tube bank internal defect have following advantage:

the utility model discloses a test probe can more accurate record walking in probe mobile scanning apart from the position, can be to the inside 360 degrees all-round detections of tube bank through once removing to the exact definite defect position of operator.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a pulse eddy current inspection probe for omni-directionally inspecting internal defects of a small-diameter tube bundle according to an embodiment of the present invention;

fig. 2 is a schematic view of the inside of a probe according to an embodiment of the present invention;

fig. 3 is a schematic view of the probe detection pipeline according to the embodiment of the present invention.

Description of reference numerals:

1-an aviation plug; 2-a transmitting coil; 3-a receiving coil; 4-a spacer; 5-a photoelectric moving element; 6-probe shell.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in figures 1-3, a pulse eddy current inspection probe for detecting defects inside a small-diameter tube bundle in an omnibearing manner comprises an aviation plug 1, a transmitting coil 2, a receiving coil 3, a spacer 4, a photoelectric moving element 5 and a probe shell 6. The aviation plug adopts a multi-core plug 1 to integrate a joint of a coil in the probe and a photoelectric moving element circuit. The coils comprise a transmitter coil 2 and at least 6 receiver coils 3. The photoelectric moving element 5 is arranged in the probe, and the moving distance point position of the probe in the tube bundle can be recorded in the moving process. The probe shell 6 is made of high-temperature-resistant materials, and the front part of the probe is designed in an arc shape, so that the probe can move more smoothly in the tube bundle.

During detection, the probe is connected with the pulse eddy current detection equipment through a wire, then the probe is manually stretched into the tube bundle for detection, defect information is automatically recorded on a PC (personal computer), after scanning is completed, the coil is used for detecting internal defects, and an operator can more accurately determine the specific position of the internal defects of the tube bundle according to the point positions recorded by the photoelectric moving element 5.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an all-round pulse eddy current inspection probe that detects small pipe diameter tube bank internal defect which characterized in that: including the probe shell, probe shell rear end is equipped with the aviation plug, be equipped with coil, spacer and photoelectric moving element in the probe shell in proper order, aviation plug connection coil and photoelectric moving element, the probe passes through aviation plug connection outside pulse eddy current testing equipment.

2. The pulse eddy current inspection probe for comprehensively inspecting the internal defects of the small-diameter tube bundle according to claim 1, characterized in that: the coils include a transmit coil and at least 6 receive coils.

3. The pulse eddy current inspection probe for comprehensively inspecting the internal defects of the small-diameter tube bundle according to claim 1, characterized in that: the aviation plug adopts a multi-core plug and is respectively connected with a joint of a coil in the probe and a joint of the photoelectric mobile element.

4. The pulse eddy current inspection probe for comprehensively inspecting the internal defects of the small-diameter tube bundle according to claim 1, characterized in that: the photoelectric moving element adopts an infrared induction photoelectric switch E3F-DS30C4 to approach a diffuse reflection type sensor and is used for recording the moving distance point position of the probe in the tube bundle.

5. The pulse eddy current inspection probe for comprehensively inspecting the internal defects of the small-diameter tube bundle according to claim 1, characterized in that: the pulse eddy current detection equipment transmits detected data to the PC in a wireless mode.

6. The pulse eddy current inspection probe for comprehensively inspecting the internal defects of the small-diameter tube bundle according to claim 1, characterized in that: the shell of the probe is made of high-temperature resistant materials.

7. The pulse eddy current inspection probe for comprehensively inspecting the internal defects of the small-diameter tube bundle according to claim 1, characterized in that: the front part of the probe is arc-shaped.