CN203502361U - Pipeline defect infrared detection device based on electromagnetic induction thermal excitation method - Google Patents
Pipeline defect infrared detection device based on electromagnetic induction thermal excitation method Download PDFInfo
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- CN203502361U CN203502361U CN201320624466.XU CN201320624466U CN203502361U CN 203502361 U CN203502361 U CN 203502361U CN 201320624466 U CN201320624466 U CN 201320624466U CN 203502361 U CN203502361 U CN 203502361U
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Abstract
The utility model relates to the field of nondestructive detection, and particularly relates to a pipeline defect infrared detection device based on an electromagnetic induction thermal excitation method. A detection target is a ferromagnetic pipeline. According to the utility model, an insulating high-temperature resistant transparent cover wound with a lead wire is arranged on the periphery of a detected pipeline, and high-frequency current is introduced; the detected pipe is heated in an active mode by utilizing proximity effect and skin effect which are generated by an electromagnetic induction coil, and image acquisition is carried out by using an infrared camera arranged on the transparent cover; an image signal is input to a display end through a USB (Universal Serial Bus) wire cable; whether the pipeline has detects or not is determined by analyzing a thermogram. A transparent cover driving device designed by utilizing the pipeline defect infrared detection device can achieve the omnibearing detection of the pipeline. The pipeline defect infrared detection device disclosed by the utility model has the characteristics of high detection efficiency and convenience for operation.
Description
Technical field
The utility model relates to field of non destructive testing, specifically a kind of the cannot-harm-detection device, particularly a kind of defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques.
Background technology
Conventional lossless detection method has ray, ultrasonic, magnetic, infiltration and the Dynamic Non-Destruction Measurement such as infrared.Ultrasonic, X-ray Testing Technology is applied at most, but the impact of examined principle, ray detection cost is high, the cycle is long, is unsuitable for on-the-spot online detection; Ultrasonic Detection needs point by point scanning, detection efficiency low, to little, thin and baroque workpiece sensing difficulty, to the unsticking Kiss defect in composite component, also cannot detect; Magnetic particle method is limited to ferrimagnet, quantitatively detects comparatively difficulty of depth of defect; Osmosis trace routine is complicated, can only detect Surface-breaking defect, can not detect surface porosity material.
Infrared Non-destructive Testing technology is the Dynamic Non-Destruction Measurement that new development is got up, and can realize the defects such as crackle to existing in metal, nonmetal and compound substance, unsticking and detect, and has noncontact, an advantage such as area of detection is large, speed is fast, online detection; But technique is not widely used in the field of non destructive testing of pipeline.
Infrared Non-destructive Testing technology is divided into passive type by its detection mode and detects and active detection, active detection is in Heat artificially workpiece or after heating, observe the Temperature Distribution of pipe surface. but traditional type of heating is as logical hot-air, it is more complicated that the modes such as PULSE HEATING exist type of heating, the problems such as detection efficiency is low, electromagnetic induction heating technology is a kind of novel heating technique, it is according to electromagnetic induction principle, to utilize the heat that in workpiece, eddy current produces to heat, compare with traditional type of heating, its efficiency of heating surface is high, speed is fast, reliability is high, be easy to realize high temperature and local heating, and be widely used in industry heating field.
When experiment is found to utilize electromagnetic induction coil to heat pipeline outer wall, easy to detect, quick, easy to operate, and detect effective.
Utility model content
The purpose of this utility model is to overcome that cost in prior art is high, the cycle long, be unsuitable for the on-the-spot online deficiency detecting, provide a kind of infrared technique of utilizing to carry out comprehensive detection to pipeline, the i.e. defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques, to obtain the device of defect of pipeline information.
For achieving the above object, the technical solution of the utility model is: a kind of defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques, is characterized in that: comprise to tested pipeline carry out active heating heating arrangement, obtain tested pipeline thermography and the drive unit that carries out the pick-up unit of graphical analysis and drive heating arrangement and thermal infrared imager to move;
Described heating arrangement comprises the control panel that is enclosed within the translucent cover on tested pipeline and translucent cover is heated; There is the blank space of 1～2cm the middle part of described translucent cover, be distributed with for being wound around the screw type fin of wire, and wire two ends is connected on control panel circuit on blank space both sides; Also be equipped with for controlling the tooth bar of translucent cover circumferential movement at the two ends of described translucent cover;
Described pick-up unit comprises by support and is fixed on the thermal infrared imager on translucent cover, the blank space on its alignment lens translucent cover; Described thermal infrared imager is connected with computing machine;
Described drive unit comprises drive motor and controls the pedestal that roller is installed of translucent cover axially-movable; Described pedestal upper surface is also provided with the gear matching with the tooth bar at translucent cover two ends, for controlling the circumferential movement of translucent cover.
Further, described translucent cover adopts insulation, high-temperature resistant composite material to make.
Further, described translucent cover adopts detachable, is enclosed within on tested pipeline, and connects with bolt when detecting, and the internal diameter of translucent cover is than the large 2～3mm of tested pipeline external diameter, and thickness is no more than 3mm.
Further, described control panel is the control panel that full-bridge or half-bridge circuit form, and is used to the wire power supply being wound around on translucent cover, and the power of half-bridge control panel is at 2.5～20kw, and the power of full-bridge control panel is at 30～100kw.
Further, described thermal infrared imager adopts universal joint with being connected of support place.
Further, described thermal infrared imager is online thermal infrared imager.
Further, described drive unit has motion driver module; Described motion driver module comprises for controlling the axially-movable module of translucent cover axially-movable and for controlling the circumferential movement module of translucent cover circumferential movement.
Further, described drive motor is miniwatt servo drive motor.
Compared to prior art, the utlity model has following beneficial effect:
1, pick-up unit of the present utility model utilizes thermal infrared imager the Temperature Distribution of testee can be detected, according to thermography, judge whether pipeline exists defect, because this infrared detection mode does not need directly to contact tested pipeline, there is detection speed fast, detect simple advantage;
2, the utility model utilizes electromagnetic induction coil to heat pipeline, this method safety, reliable, and the control panel that can also consist of full-bridge or half-bridge circuit regulates the rate of heat addition to obtain best detection effect;
3, in testing process, by the position of adjusting translucent cover, can realize the omnibearing detection to pipeline.
Accompanying drawing explanation
Fig. 1 is the structural drawing of a kind of defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques of the present utility model.
Fig. 2 is the theory diagram of a kind of embodiment of the utility model.
In figure: 1-translucent cover, 2-tooth bar, 3-wire, 4-screw type fin, 5-support, 6-gear, 7-pedestal, 8-tested pipeline, 9-roller, 10-control panel, 11-thermal infrared imager, 12-USB cable, 13-computing machine.
Embodiment
Below in conjunction with accompanying drawing 1-2 and embodiment, the technical solution of the utility model is specifically described.
As shown in Figure 1, a kind of defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques of the present utility model, is characterized in that: comprise to tested pipeline 8 carry out active heating heating arrangement, obtain tested pipeline 8 thermographies and the drive unit that carries out the pick-up unit of graphical analysis and drive heating arrangement and thermal infrared imager 11 to move;
Described heating arrangement comprises the translucent cover 1 being enclosed within on tested pipeline 8 and the control panel 10 that translucent cover 1 is heated; There is the blank space of 1～2cm the middle part of described translucent cover 1, be distributed with for being wound around the screw type fin 4 of wire 3, and wire 3 two ends is connected on control panel 10 circuit on blank space both sides; Also be equipped with for controlling the tooth bar 2 of translucent cover 1 circumferential movement at the two ends of described translucent cover 1;
Described pick-up unit comprises by support 5 and is fixed on the thermal infrared imager 11 on translucent cover 1, the blank space on its alignment lens translucent cover 1; Described thermal infrared imager 11 is connected by USB cable 12 with computing machine 13;
Described drive unit comprises drive motor and controls the pedestal that roller 9 is installed 7 of translucent cover 1 axially-movable; Described pedestal 7 upper surfaces are also provided with the gear 6 matching with the tooth bar 2 at translucent cover 1 two ends, for controlling the circumferential movement of translucent cover 1.
Described translucent cover 1 adopts insulation, high-temperature resistant composite material to make.
For the ease of the dismounting of translucent cover 1, described translucent cover 1 adopts detachable, is enclosed within on tested pipeline 8, and connects with bolt when detecting, and the internal diameter of translucent cover 1 is than the large 2～3mm of tested pipeline 8 external diameter, and thickness is no more than 3mm.
Described control panel 10 is the control panel that full-bridge or half-bridge circuit form, and is used to wire 3 power supplies that are wound around on translucent cover 1, and the power of half-bridge control panel is at 2.5～20kw, and the power of full-bridge control panel is at 30～100kw.
In order to facilitate the activity of thermal infrared imager 11, described thermal infrared imager 11 adopts universal joint with being connected of support 5 places.
Described thermal infrared imager 11 is online thermal infrared imager.
In order to drive the translucent cover 1 and thermal infrared imager 11 motions of being fixed on translucent cover 1 of heating arrangement, described drive unit has motion driver module; Described motion driver module comprises for controlling the axially-movable module of translucent cover 1 axially-movable and for controlling the circumferential movement module of translucent cover 1 circumferential movement.
Described drive motor is miniwatt servo drive motor.
Below in conjunction with accompanying drawing 2, tell about the principle of work of a kind of defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques of the utility model:
1. the control panel 10 of pair heating arrangement is switched on, and kelvin effect and the proximity effect of utilizing electromagnetic induction coil to produce are carried out active heating to tested pipeline 8;
2. utilize the thermal infrared imager 11 in pick-up unit to catch the image of tested pipeline 8, and image information is input to computing machine 13 by USB cable 12;
3. utilize image processing software to carry out analyzing and processing to image information, judge whether tested pipeline exists defect.
As shown in Figure 1-2, drive unit of the present utility model utilizes the roller 9 on pedestal 7 to realize the axially-movable of translucent cover 1, and gear 6 and tooth bar 2 can be realized the circumferential movement of translucent cover 1, so just can realize the comprehensive detection to tested pipeline 8; In testing process, can pass through the frequency of operation of regulation control plate 10, to change tested pipeline 8 rates of heat addition, reach optimum detection effect.
It is more than the preferred embodiment of a kind of defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques of the utility model; all changes of doing according to technical solutions of the utility model; when the function producing does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.
Claims (8)
1. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques, is characterized in that: comprise to tested pipeline carry out active heating heating arrangement, obtain tested pipeline thermography and the drive unit that carries out the pick-up unit of graphical analysis and drive heating arrangement and thermal infrared imager to move;
Described heating arrangement comprises the control panel that is enclosed within the translucent cover on tested pipeline and translucent cover is heated; There is the blank space of 1～2cm the middle part of described translucent cover, be distributed with for being wound around the screw type fin of wire, and wire two ends is connected on control panel circuit on blank space both sides; Also be equipped with for controlling the tooth bar of translucent cover circumferential movement at the two ends of described translucent cover;
Described pick-up unit comprises by support and is fixed on the thermal infrared imager on translucent cover, the blank space on its alignment lens translucent cover; Described thermal infrared imager is connected with computing machine;
Described drive unit comprises drive motor and controls the pedestal that roller is installed of translucent cover axially-movable; Described pedestal upper surface is also provided with the gear matching with the tooth bar at translucent cover two ends, for controlling the circumferential movement of translucent cover.
2. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques according to claim 1, is characterized in that: described translucent cover adopts insulation, high-temperature resistant composite material to make.
3. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques according to claim 1 and 2, it is characterized in that: described translucent cover adopts detachable, when detecting, be enclosed within on tested pipeline, and connect with bolt, the internal diameter of translucent cover is than the large 2～3mm of tested pipeline external diameter, and thickness is no more than 3mm.
4. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques according to claim 1, it is characterized in that: described control panel is the control panel that full-bridge or half-bridge circuit form, be used to the wire power supply being wound around on translucent cover, the power of half-bridge control panel is at 2.5～20kw, and the power of full-bridge control panel is at 30～100kw.
5. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques according to claim 1, is characterized in that: described thermal infrared imager adopts universal joint with being connected of support place.
6. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques according to claim 1 or 5, is characterized in that: described thermal infrared imager is online thermal infrared imager.
7. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques according to claim 1, is characterized in that: described drive unit has motion driver module; Described motion driver module comprises for controlling the axially-movable module of translucent cover axially-movable and for controlling the circumferential movement module of translucent cover circumferential movement.
8. the defect of pipeline infrared detecting device based on electromagnetic induction heat motivational techniques according to claim 1, is characterized in that: described drive motor is miniwatt servo drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320624466.XU CN203502361U (en) | 2013-10-11 | 2013-10-11 | Pipeline defect infrared detection device based on electromagnetic induction thermal excitation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320624466.XU CN203502361U (en) | 2013-10-11 | 2013-10-11 | Pipeline defect infrared detection device based on electromagnetic induction thermal excitation method |
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| CN203502361U true CN203502361U (en) | 2014-03-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487443A (en) * | 2013-10-11 | 2014-01-01 | 福州大学 | Electromagnetic induction thermal excitation method based pipeline defect infrared detection system |
| CN106370697A (en) * | 2016-10-26 | 2017-02-01 | 王琪 | Cable ageing position infrared-detection device based on heat-conducting property detection |
| CN110376249A (en) * | 2019-07-02 | 2019-10-25 | 福建师范大学福清分校 | A kind of current vortex thermal imaging testing method and device |
-
2013
- 2013-10-11 CN CN201320624466.XU patent/CN203502361U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487443A (en) * | 2013-10-11 | 2014-01-01 | 福州大学 | Electromagnetic induction thermal excitation method based pipeline defect infrared detection system |
| CN103487443B (en) * | 2013-10-11 | 2015-10-14 | 福州大学 | A kind of defect of pipeline infrared detection system based on electromagnetic induction thermal excitation method |
| CN106370697A (en) * | 2016-10-26 | 2017-02-01 | 王琪 | Cable ageing position infrared-detection device based on heat-conducting property detection |
| CN106370697B (en) * | 2016-10-26 | 2019-06-14 | 盐池县惠泽农机作业有限公司 | Cable aging position infrared detecting device based on heating conduction detection |
| CN110376249A (en) * | 2019-07-02 | 2019-10-25 | 福建师范大学福清分校 | A kind of current vortex thermal imaging testing method and device |
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Granted publication date: 20140326 Termination date: 20201011 |