CN2849719Y - Rotary detector for longitudinal defect of steel pipe - Google Patents
Rotary detector for longitudinal defect of steel pipe Download PDFInfo
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- CN2849719Y CN2849719Y CN 200520099214 CN200520099214U CN2849719Y CN 2849719 Y CN2849719 Y CN 2849719Y CN 200520099214 CN200520099214 CN 200520099214 CN 200520099214 U CN200520099214 U CN 200520099214U CN 2849719 Y CN2849719 Y CN 2849719Y
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- steel pipe
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Abstract
The utility model relates to a rotary detector for longitudinal defects of steel pipes, which belongs to a lossless inspection device. The utility model comprises a sensor, a signal processing device and a rotary device, wherein the sensor comprises a magnetizer and a signal pick device. The utility model has the difference that the rotary device comprises a main shaft, balance wheels, a flexible supporting mechanism, a lifting mechanism, a driving mechanism, and a signal transmission mechanism; the flexible supporting mechanism is fixedly connected with the lifting mechanism via an adjustable screw, and the two balance wheels are connected into integration via a connecting plate; the signal transmission mechanism is sheathed with the main shaft, the driving mechanism is connected with the main shaft, and the magnetizer is composed of a magnetic shielding cover and 5 to 10 pairs of permanent magnets; the centre distance L of the permanent magnet is less than the diameter of the measured workpiece, the signal pick device is movably arranged in the middle of the magnetizer, and the sensor is arranged in the rotary device via the flexible supporting mechanism. The utility model has the active effects that the utility model can be directly arranged on the existing detector, the investment cost is low, the detecting efficiency is high, the reliability is high, a qualitative analysis and a quantitative analysis for the defect size can be carried out, the utility model is convenient in use, and demagnetization is not required.
Description
Technical field
The utility model belongs to a kind of non-destructive detecting device, particularly a kind ofly uses the rotation detecting that the Magnetic Flux Leakage Inspecting principle detects the steel pipe longitudinal defect.
Background technology
In the use of steel pipes such as oil pipe, drilling rod, because factors such as the washing away of the up and down fricting movement of beam hanger in pit shaft, liquid, long-term high-voltage operation very easily produce vertical use defective at inside pipe wall; Secondly, in the manufacture process of steel pipe,, also easily produce small vertical manufacturing defect owing to situations such as production technology instability, starting material impurity exceed standard.At present, in the Non-Destructive Testing to steel pipe, longitudinal defect all is to utilize the principle of leakage flux to detect, but its resolution is very low always, and generally its section loss just can be measured greater than 12% o'clock, omission easily, reduce the reliability of equipment, brought the loss that to estimate to production.
Summary of the invention
Problem to be solved in the utility model is exactly to provide a kind of steel pipe longitudinal defect rotation detecting at the deficiency of above-mentioned prior art existence, it can not only measure having or not of longitudinal defect, qualitatively judge, and can measure the degree of depth of defective, its detecting reliability height.
The utility model is to solve the problems of the technologies described above the technical scheme that is proposed to be: comprise sensor, signal processing apparatus and whirligig, described sensor comprises magnetizing apparatus and signal pickup, its difference is that described whirligig comprises main shaft, balance wheel, flexible support mechanism, elevating mechanism, driving mechanism and signal transport sector, flexible support mechanism is connected by adjusting screw and elevating mechanism, two balance wheels are connected as a single entity by web joint, the signal transport sector is socketed on the main shaft, driving mechanism links to each other with main shaft, described magnetizing apparatus is by magnetic shielding cover, armature and 5～10 pairs of permanent magnets are formed, the centre distance L of permanent magnet is less than the diameter of measured workpiece, described signal pickup active configuration is in the middle of magnetizing apparatus, and described sensor places in the whirligig by flexible support mechanism.
Press such scheme, described signal processing apparatus comprises signal preprocessor, signal processor, display and controller, and signal preprocessor links to each other with signal processor by the signal transport sector, and controller links to each other with signal preprocessor.
Press such scheme, described signal transport sector is made up of 2～6 slip rings.
Press such scheme, the power of described elevating mechanism is electric cylinder.
Press such scheme, the power of described driving mechanism is motor.
The utility model in use, sensor under the driving mechanism effect continuously the rotation, when workpiece passes whirligig, under the effect of controller, contact roller workpiece pressing, elevating mechanism drive the sensor action, sensor is contacted with the workpiece outside surface, and guarantee certain pressure, avoid beating; Begin acquired signal simultaneously, signal is transported to signal processor through the signal transport sector after amplifying through signal preprocessor again, is converted into digital signal, carries out analyzing and processing by the Computer signal disposal system again, shows at last and prints.
Good effect of the present utility model is:
1) the utility model can directly be installed on the existing checkout equipment, does not need to change other equipment;
2) the utility model investment cost is low, detection efficiency height, reliability height, and defect size can be made qualitative and quantitative analysis;
3) easy to use, foolproof operation;
4) after detection finished, workpiece did not have remanent magnetism, need not demagnetization.
Description of drawings
Fig. 1 is an overall formation synoptic diagram of the present utility model;
Fig. 2 is the sensor construction synoptic diagram;
Fig. 3 is Fig. 2 side sectional view;
Fig. 4 is tested oil pipe longitudinal defect synoptic diagram;
Fig. 5 is Fig. 4 side sectional view;
The flaw indication synoptic diagram that Fig. 6 is obtained when being applied to Fig. 4 and measured oil defective tube shown in Figure 5 detection for the utility model.
Embodiment
Below in conjunction with accompanying drawing structure of the present utility model is further described in detail.
As Fig. 1～shown in Figure 3, the utility model comprises sensor 15, signal processing apparatus and whirligig.Sensor comprises magnetizing apparatus 21 and signal pickup 20; Whirligig comprises main shaft 3, balance wheel 4, flexible support mechanism 16, elevating mechanism 6, driving mechanism 2 and signal transport sector 8, flexible support mechanism is connected by adjusting screw and elevating mechanism, the driving of elevating mechanism is an electric cylinder, two balance wheels are connected as a single entity by web joint 5, the signal transport sector is socketed on the main shaft, driving mechanism links to each other with main shaft, and the power of driving mechanism is motor, and motor drives the sensor rotation by sprocket wheel 17 driven in rotation devices; Described magnetizing apparatus is made up of magnetic shielding cover 22, armature 19 and 5～10 pairs of permanent magnets, the centre distance L of two permanent magnets is less than the diameter of measured workpiece, in the middle of magnetizing apparatus, described sensor places in the whirligig by flexible support mechanism described signal pickup by governor motion 18 active configuration; Signal processing apparatus comprises signal preprocessor 14, signal processor 13, display 11, printer 12 and controller 10, signal preprocessor links to each other with signal processor by the signal transport sector, controller links to each other with signal preprocessor, and the signal transport sector is made up of 2～6 slip rings.
When the utility model uses, compress measured workpiece with contact roller 9, can not allow it go here and there up and down, whole device is installed on the support 7, and support is fixed in ground by foot screw.
Shown in Fig. 4～5, the defective 23 of tested oil pipe 1 is wide 3mm, the cannelure of dark 3mm, defective 24 is wide 3mm, the cannelure of dark 1.5mm, at tube inner wall, the technician can't estimate, when adopting this device that it is detected, the gained signal as shown in Figure 6, sensor rotates a circle, through defective 23, defective 24 produces different waveforms, waveform 25 and waveform 27 expression sensors first, the waveform that secondary produces through defective 23, waveform 26 expression sensors pass through defective 24 for the first time, the size of its waveforms amplitude, the depth of expression defective, the depth of defect of waveform 25 and waveform 27 representatives is darker than the defective of waveform 26 representatives.
Claims (5)
1, steel pipe longitudinal defect rotation detecting comprises sensor (15), signal processing apparatus and whirligig, described sensor comprises magnetizing apparatus (21) and signal pickup (20), it is characterized in that described whirligig comprises main shaft (3), balance wheel (4), flexible support mechanism (16), elevating mechanism (6), driving mechanism (2) and signal transport sector (8), flexible support mechanism is connected by adjusting screw and elevating mechanism, two balance wheels are connected as a single entity by web joint (5), the signal transport sector is socketed on the main shaft, driving mechanism links to each other with main shaft, described magnetizing apparatus is by magnetic shielding cover (22), armature (19) and 5～10 pairs of permanent magnets are formed, the centre distance L of permanent magnet is less than the diameter of measured workpiece, described signal pickup active configuration is in the middle of magnetizing apparatus, and described sensor places in the whirligig by flexible support mechanism.
2, by the described steel pipe longitudinal defect of claim 1 rotation detecting, it is characterized in that described signal processing apparatus comprises signal preprocessor (14), signal processor (13), display (11) and controller (10), signal preprocessor links to each other with signal processor by the signal transport sector, and controller links to each other with signal preprocessor.
3,, it is characterized in that described signal transport sector is made up of 2～6 slip rings by claim 1 or 2 described steel pipe longitudinal defect rotation detectings.
4, by claim 1 or 2 described steel pipe longitudinal defect rotation detectings, the power that it is characterized in that described elevating mechanism is electric cylinder.
5, by claim 1 or 2 described steel pipe longitudinal defect rotation detectings, the power that it is characterized in that described driving mechanism is motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520099214 CN2849719Y (en) | 2005-12-06 | 2005-12-06 | Rotary detector for longitudinal defect of steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520099214 CN2849719Y (en) | 2005-12-06 | 2005-12-06 | Rotary detector for longitudinal defect of steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849719Y true CN2849719Y (en) | 2006-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520099214 Expired - Fee Related CN2849719Y (en) | 2005-12-06 | 2005-12-06 | Rotary detector for longitudinal defect of steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849719Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458436C (en) * | 2007-02-14 | 2009-02-04 | 沈阳银捷机械装备制造有限责任公司 | Multifunction electromagnetic flaw detection device |
| CN100588965C (en) * | 2007-09-25 | 2010-02-10 | 王祥国 | Railroad micro-magnetism flaw detector and its defectoscopy |
| CN103926308A (en) * | 2013-01-12 | 2014-07-16 | 合肥环博检测科技有限公司 | Integrated sensor complete coverage rotation high-speed detection apparatus |
| CN109270160A (en) * | 2018-09-14 | 2019-01-25 | 苏州磁星检测设备有限公司 | A kind of magnetic powder inspection adds magnetic device |
| CN109270161A (en) * | 2018-09-14 | 2019-01-25 | 苏州磁星检测设备有限公司 | A kind of magnaflux |
-
2005
- 2005-12-06 CN CN 200520099214 patent/CN2849719Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458436C (en) * | 2007-02-14 | 2009-02-04 | 沈阳银捷机械装备制造有限责任公司 | Multifunction electromagnetic flaw detection device |
| CN100588965C (en) * | 2007-09-25 | 2010-02-10 | 王祥国 | Railroad micro-magnetism flaw detector and its defectoscopy |
| CN103926308A (en) * | 2013-01-12 | 2014-07-16 | 合肥环博检测科技有限公司 | Integrated sensor complete coverage rotation high-speed detection apparatus |
| CN103926308B (en) * | 2013-01-12 | 2018-08-07 | 合肥环博检测科技有限公司 | Comprehensive sensor all standing rotates high-speed detection device |
| CN109270160A (en) * | 2018-09-14 | 2019-01-25 | 苏州磁星检测设备有限公司 | A kind of magnetic powder inspection adds magnetic device |
| CN109270161A (en) * | 2018-09-14 | 2019-01-25 | 苏州磁星检测设备有限公司 | A kind of magnaflux |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20100106 |