CN202794108U - Testing device for magnetic powder inspection of steel pipe - Google Patents
Testing device for magnetic powder inspection of steel pipe Download PDFInfo
- Publication number
- CN202794108U CN202794108U CN 201220394123 CN201220394123U CN202794108U CN 202794108 U CN202794108 U CN 202794108U CN 201220394123 CN201220394123 CN 201220394123 CN 201220394123 U CN201220394123 U CN 201220394123U CN 202794108 U CN202794108 U CN 202794108U
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- steel pipe
- magnetization
- powder inspection
- magnetic field
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Abstract
The utility model discloses a testing device for magnetic powder inspection of a steel pipe. The testing device comprises a magnetization trolley and a magnetic field indicator; one end in the magnetization trolley is provided with an inner core rod magnetic pole, an axial magnetization coil and a magnetic suspension spray pipe; one end of the tested steel pipe is arranged between the inner core rod magnetic pole and the axial magnetization coil in a sleeving manner and is positioned below the magnetic suspension spray pipe; the other end in the magnetization trolley is provided with a circumferential magnetization magnetic pole; the magnetic field indicator comprises an octagonal no residual magnetism shielding ring, a non-magnetic connecting rod and an adsorption block; one end of the non-magnetic connecting rod is connected with the no residual magnetism shielding ring and the other end of the non-magnetic connecting rod is connected with the adsorption block; and the bottom of the adsorption block is provided with a permanent magnet block for being adsorbed on the tested steel pipe. By magnetic adsorption of the adsorption block, the magnetization standard test can be conveniently and rapidly realized.
Description
Technical field
The utility model relates to magnetization test equipment, more particularly, relates to a kind of proving installation for the steel pipe magnetic powder inspection.
Background technology
Steel pipe manufacturing enterprise all can dispose the nondestructiving inspecting equipment that some are used for quality testing on pipe production line both at home and abroad.Weldless steel tube enterprise has all disposed multi-functional flaw detection unit (UT (Ultrasonic Testing)+eddy current test) usually on every oil well pipe check line, be used for the quality testing of oil well pipe body portion.In conventional body flaw detection operation, steel pipe two is to detect a flaw, and is not detectable area (blind area) on the specialty, and 200 millimeters long are arranged approximately.
Oil well pipe product for carrying out U.S. API standard generally adopts pipe end magnetic powder inspection method that the blind area part is detected a flaw.The pipe end magnetic particle inspection apparatus generally is configured in the both sides of body defect-detecting equipment, and the steel pipe after respectively body being detected a flaw end to end blind area, two ends part detects.The pipe end magnetic particle inspection apparatus all has production both at home and abroad at present, and according to the difference of body carrying out flaw detection rhythm, pipe end magnetic particle inspection apparatus general 3～5 materials in the tube when flaw detection detect simultaneously, and the sensing range maximum can be apart from end 350mm.In order effectively to detect the various orientation defectives in the steel pipe, magnetic particle inspection apparatus adopts the method for resultant magnetization, and logical direct current carries out longitudinal magnetization first, and then logical upper alternating current carries out circumferential magnetization.Be checking defect-detecting equipment magnetization standard during magnetic powder inspection, must adopt Magnetic field indicator (Calibration Piece for Sensitivity) to verify whether selected magnetization standard (magnetization current) is best.The Magnetic field indicator of prior art is commonly called as the octagon test block, and it is the sensitivity test block of magnetic powder inspection, the magnetization current when it not only can be used for determining steel tube flaw detection, and the performance that can also be used to checkout facility and magnetic flaw detection ink is determined effective magnetic direction and zone.The use of Magnetic field indicator at first must be close to outer surface of steel tube with Magnetic field indicator, can not be gapped, then with plastic adhesive tape indicator is fixed.Magnetic field indicator is magnetized simultaneously with steel pipe, and at Magnetic field indicator upper magnetic flaw detection ink, then regulate gradually instrument magnetization standard, until on can clear display indicator till four lines, illustrate that the magnetization current of magnetic particle inspection apparatus satisfies standard-required this moment.Yet prior art tends to run into many problems in the reality test, at first steel pipe is through front road body flaw detection operation, outer surface of steel tube can leave the UT (Ultrasonic Testing) coupled water, steel tube surface is moistening relatively poor with plastic adhesive tape stickup Magnetic field indicator effect, Magnetic field indicator often occurs to be pasted not strongly, Magnetic field indicator and adhesive tape are washed away together by magnetic flaw detection ink, need repeated multiple times fixedly paste indicator test just effective, this will affect the work efficiency of magnetization normative testing, sometimes adhesive tape is poured the magnetic flaw detection ink cyclic water tank together by magnetic flaw detection ink, cause the magnetic flaw detection ink water circulating pump to stop up and break down, generally fixing a breakdown needs several hours, affects normal production testing.Secondly, the pipe end magnetic powder inspection generally is that multichannel (3-5 road) is detected a flaw simultaneously, during operating personnel's fixed magnetic field indicator, must climb to and remove the fixed magnetic field indicator above the steel pipe, because steel tube surface is wet and slippery, human body slips easily, has potential safety hazard.
The utility model content
For the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of proving installation for the steel pipe magnetic powder inspection, can make things convenient for, carry out efficiently and accurately the magnetic field indication.
For achieving the above object, the utility model adopts following technical scheme:
The proving installation that should be used for the steel pipe magnetic powder inspection, comprise magnetization dolly and Magnetic field indicator, an end is provided with the inner core rod magnetic pole in the magnetization dolly, axial magnetized coil and magnetic flaw detection ink shower, tested steel pipe one end is sheathed between inner core rod magnetic pole and the axial magnetized coil and is positioned at magnetic flaw detection ink shower below, the other end is provided with the circumferential magnetization magnetic pole in the magnetization dolly, Magnetic field indicator comprises that octagon is without the remanent magnetism shading ring, non magnetic connecting link and Attraction block, non magnetic connecting link one end connects without the remanent magnetism shading ring, the other end connects Attraction block, and the Attraction block bottom is provided with permanent magnetic iron block in order to be adsorbed on the tested steel pipe.
The bottom of described Attraction block is the cancave cambered surface suitable with the tube wall of tested steel pipe.
Described permanent magnetic iron block is two, is embedded on the cancave cambered surface, and forms the magnetic field closure of the N best S utmost point.
Described Attraction block adopts wooden unit to make.
Described circumferential magnetization magnetic pole is a pair of of upper and lower setting, and the top of upper circumferential pole magnetization also is connected with cylinder.
In technique scheme, proving installation for the steel pipe magnetic powder inspection of the present utility model comprises magnetization dolly and Magnetic field indicator, an end is provided with the inner core rod magnetic pole in the magnetization dolly, axial magnetized coil and magnetic flaw detection ink shower, tested steel pipe one end is sheathed between inner core rod magnetic pole and the axial magnetized coil and is positioned at magnetic flaw detection ink shower below, the other end is provided with the circumferential magnetization magnetic pole in the magnetization dolly, Magnetic field indicator comprises that octagon is without the remanent magnetism shading ring, non magnetic connecting link and Attraction block, non magnetic connecting link one end connects without the remanent magnetism shading ring, the other end connects Attraction block, and the Attraction block bottom is provided with permanent magnetic iron block in order to be adsorbed on the tested steel pipe.By the magnetic absorption of Attraction block, can realization easily and fast magnetize normative testing.
Description of drawings
Fig. 1 is structure and the use procedure synoptic diagram of proving installation of the present utility model;
Fig. 2 is the structural representation of Magnetic field indicator of the present utility model.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
See also Fig. 1～shown in Figure 2, proving installation for the steel pipe magnetic powder inspection of the present utility model comprises magnetization dolly 1 and Magnetic field indicator 3, an end is provided with inner core rod magnetic pole 2 in the magnetization dolly 1, axial magnetized coil 5 and magnetic flaw detection ink shower 4, tested steel pipe 8 one ends are sheathed between inner core rod magnetic pole 2 and the axial magnetized coil 5 and are positioned at magnetic flaw detection ink shower 4 belows, the magnetization dolly 1 interior other end is provided with circumferential magnetization magnetic pole 6, Magnetic field indicator 3 comprises that octagon is without remanent magnetism shading ring 9, non magnetic connecting link 10 and Attraction block 11, non magnetic connecting link 10 1 ends connect without remanent magnetism shading ring 9, the other end connects Attraction block 11, and Attraction block 11 bottoms are provided with permanent magnetic iron block 12 in order to be adsorbed on the tested steel pipe 8.Wherein, described Attraction block 11 adopts wooden unit to make, and its bottom is the cancave cambered surface suitable with the tube wall of tested steel pipe 8, and described permanent magnetic iron block 12 is two, is embedded on the cancave cambered surface, and forms the magnetic field closure of the N best S utmost point, in order to be adsorbed on the steel pipe 8.And circumferential magnetization magnetic pole 6 is a pair of of upper and lower setting, and the top of upper circumferential pole magnetization 6 also is connected with the cylinder 7 in order to drive.
When implementing the magnetization normative testing, be placed on steel pipe 8 arbitrary test positions by the hand-held Magnetic field indicator 3 of operating personnel by permanent magnetic absorption, to magnetize again dolly 1 and move into steel pipe 8 test ends, and open a pair of circumferential magnetization magnetic pole 6 and inner core rod magnetic pole 2, at this moment, in steel pipe 8, can produce Circumferential field, make simultaneously the longitudinal magnetization coil electricity, in steel pipe 8, produce longitudinal magnetic field, by spraying magnetic flaw detection ink on 4 pairs of steel pipes 8 of one group of magnetic flaw detection ink shower and the Magnetic field indicator 3, then, regulate gradually instrument magnetization standard, until can clearly see without till four magnetic traces 13 on the remanent magnetism shading ring 9.
Adopt proving installation of the present utility model to have following advantage:
1, can place Magnetic field indicator 3 at steel pipe 8 any positions, be used for the test of magnetic powder inspection unit magnetization standard, finish the magnetization normative testing time less than 10 minutes at every turn.And traditional Magnetic field indicator 3 can only be placed on steel pipe 8 to the upper part (12 o'clock direction) test, and because of the test weak effect, need repeatedly test, finish the magnetization normative testing time greater than 20 minutes at every turn, test job efficient is lower.
2, operating personnel need not climb to and paste Magnetic field indicator 3 on the steel pipe 8, only need that Magnetic field indicator 3 directly is placed on steel pipe 8 test positions and get final product, and potential safety hazard is eliminated, and can avoid operating personnel to climb on steel pipe 8, the generation of the casualty accident that slips because of carelessness.
3, need not greasy dirt, water mark, corrosion etc. on steel pipe 8 surfaces affects Magnetic field indicator 3 and steel pipe 8 bonding situations and processes, and has simplified the pre-treatment step of whole test process, and work efficiency obviously improves.
4, need not can avoid tape-stripping not firm with tape-stripping Magnetic field indicator 3, poured the magnetic flaw detection ink water tank by magnetic flaw detection ink, and cause the water circulating pump plugging fault, the situation that impact is produced occurs.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (5)
1. proving installation that is used for the steel pipe magnetic powder inspection is characterized in that:
Comprise magnetization dolly and Magnetic field indicator, an end is provided with inner core rod magnetic pole, axial magnetized coil and magnetic flaw detection ink shower in the magnetization dolly, tested steel pipe one end is sheathed between inner core rod magnetic pole and the axial magnetized coil and is positioned at magnetic flaw detection ink shower below, the other end is provided with the circumferential magnetization magnetic pole in the magnetization dolly, Magnetic field indicator comprises that octagon is without remanent magnetism shading ring, non magnetic connecting link and Attraction block, non magnetic connecting link one end connects without the remanent magnetism shading ring, the other end connects Attraction block, and the Attraction block bottom is provided with permanent magnetic iron block in order to be adsorbed on the tested steel pipe.
2. the proving installation for the steel pipe magnetic powder inspection as claimed in claim 1 is characterized in that:
The bottom of described Attraction block is the cancave cambered surface suitable with the tube wall of tested steel pipe.
3. the proving installation for the steel pipe magnetic powder inspection as claimed in claim 2 is characterized in that:
Described permanent magnetic iron block is two, is embedded on the cancave cambered surface, and forms the magnetic field closure of the N best S utmost point.
4. the proving installation for the steel pipe magnetic powder inspection as claimed in claim 2 is characterized in that:
Described Attraction block adopts wooden unit to make.
5. the proving installation for the steel pipe magnetic powder inspection as claimed in claim 1 is characterized in that:
Described circumferential magnetization magnetic pole is a pair of of upper and lower setting, and the top of upper circumferential pole magnetization also is connected with cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220394123 CN202794108U (en) | 2012-08-09 | 2012-08-09 | Testing device for magnetic powder inspection of steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220394123 CN202794108U (en) | 2012-08-09 | 2012-08-09 | Testing device for magnetic powder inspection of steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794108U true CN202794108U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220394123 Expired - Lifetime CN202794108U (en) | 2012-08-09 | 2012-08-09 | Testing device for magnetic powder inspection of steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202794108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101644B (en) * | 2013-04-03 | 2017-09-19 | 南宁奥博斯检测科技有限责任公司 | Small-caliber pipeline inwall magnetic powder detection method and device |
| CN113092573A (en) * | 2021-04-19 | 2021-07-09 | 中国特种设备检测研究院 | High pressure hydrogen storage container internal surface defect detection device |
-
2012
- 2012-08-09 CN CN 201220394123 patent/CN202794108U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101644B (en) * | 2013-04-03 | 2017-09-19 | 南宁奥博斯检测科技有限责任公司 | Small-caliber pipeline inwall magnetic powder detection method and device |
| CN113092573A (en) * | 2021-04-19 | 2021-07-09 | 中国特种设备检测研究院 | High pressure hydrogen storage container internal surface defect detection device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
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| CX01 | Expiry of patent term |