CN103308595A - Tube sheet welding line magnetic defect detector - Google Patents
Tube sheet welding line magnetic defect detector Download PDFInfo
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- CN103308595A CN103308595A CN2013102041232A CN201310204123A CN103308595A CN 103308595 A CN103308595 A CN 103308595A CN 2013102041232 A CN2013102041232 A CN 2013102041232A CN 201310204123 A CN201310204123 A CN 201310204123A CN 103308595 A CN103308595 A CN 103308595A
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Abstract
The invention discloses a tube sheet welding line magnetic defect detector, and relates to a magnetic defect detector. The magnetic defect detector is used for solving the problem that the welding defect detection on a tube sheet welding line of a heat exchanger is inconvenient. The magnetic defect detector comprises a circular electrode, a tubular electrode, a support tube, a disc, a support sheet, an upper expanding head, a lower expanding head, an expanding block, a spindle, a slotted steel cylinder, an electric wire, a cable and a plug, wherein the circular electrode is fixed at the lower side of the disc through the support sheet, the support tube is fixed on the lower surface of the disc, the spindle is arranged in the support tube, the lower parts of the support tube and the spindle are respectively fixedly connected with the upper expanding head and the lower expanding head, the external parts of the upper expanding head and the lower expanding head are orderly provided with the expanding blocks, the slotted steel cylinder and the tubular electrode, the plug is electrically connected with the disc and the circular electrode through the cable. A magnetic field produced by the current is introduced between the circular electrode and the tubular electrode, and the magnetic particle is sprayed to check the welding line defect, the efficiency of performing the welding defect detection on the heat exchanger tube sheet welding line is effectively improved, and the missing defection is avoided.
Description
Technical field
The present invention relates to a kind of magnetic powder flaw detector, specifically a kind of for detection of Tube Sheet of Heat Exchanger plate welding seams defective panel weld magnetic powder flaw detector whether.
Background technology
When detecting the heat exchanger tube sheet weld defect, do not have special magnetic powder flaw detector at present, general A, D, E, O type are popped one's head in all unavailable, can only use two stick electrode, pass into electric current between two electrodes, the magnetic field that utilizes this electric current to produce is sprayed magnetic and is detected defective.The shortcoming of this way is: because the weld seam of pipe and plate is circular, and can only produce spindle shape electric current between two stick electrode, can't produce near-ring shape electric current, so can only gradation on one side test, not only work efficiency is low, and often causes undetected.
Summary of the invention
The object of the present invention is to provide a kind of panel weld magnetic powder flaw detector, the magnetic field that produces by between ring electrode and tubular electrode, passing into electric current, and spray the magnetic particle inspection weld defect, the problem of inconvenience when carrying out the weld defects check for solution heat exchanger panel weld.
The present invention solves the technical scheme that its technical matters takes: a kind of panel weld magnetic powder flaw detector comprises ring electrode, tubular electrode, arm, disk, support plate, rise head, lower rise head, the piece that rises, mandrel, fluting steel cylinder, electric wire, cable and plug.
Described ring electrode is annular metal parts, central authorities at described ring electrode are provided with a rosette, between described ring electrode and disk, link into an integrated entity by the insulation support plate, the two ends of support plate are riveted on respectively on the upper supporting plate seat and lower carrier plate seat that is fixed on disk and the ring electrode, and circumferentially are evenly equipped with at least three float electrodes at described ring electrode;
Described disk central authorities are fixedly connected with the metal arm of a hollow by screw thread, described arm lower end is fixedly connected with tip taper rising metal head down by screw thread; One mandrel passes described arm and up and down two ends of arm are extended at two ends, is articulated with centering type locking handle in the upper end of described mandrel, is fixedly connected with the head that rises under the taper metal up of a tip by screw thread in the lower end of described mandrel;
Be provided with the spring that is enclosed within on the mandrel between the head upper and lower the rising that is oppositely arranged, and three metals that evenly are arranged on the upper and lower nose cone section periphery of rising piece that rises, be nested with successively from inside to outside simultaneously fluting steel cylinder and fluting tubular electrode in the periphery of the piece that rises, even for guaranteeing electric current, the fluting on described steel cylinder and the tubular electrode is several fonts slits;
Described disk and ring electrode are electrically connected to plug by cable respectively.
Described insulation support plate is glass epoxy.
Described float electrode, ring electrode, tubular electrode are the red copper member.
The invention has the beneficial effects as follows: the magnetic field that produces by between ring electrode and tubular electrode, passing into electric current, and spray the magnetic particle inspection weld defect, Effective Raise the heat exchanger panel weld carry out weld defects power of tests rate, and avoided undetected.
Description of drawings
Fig. 1 is 3 d effect graph of the present invention;
Fig. 2 is cut-open view of the present invention;
Fig. 3 is fundamental diagram step 1 of the present invention;
Fig. 4 is fundamental diagram step 2 of the present invention;
Among the figure: 1 plug, 2 locking handles, 3 disks, 4 upper supporting plate seats, 5 support plates, 6 ring electrodes, 7 arms, 8 rise heads, 9 tubular electrodes, more than 10 font slits, 11 float electrodes, 12 steel pins, 13 lower carrier plate seats, 14 electric wires, 15 cables, 16 mandrels, 17 pieces that rise, 18 fluting steel cylinders, 19 springs, 20 times heads that rise, 21 weld seams to be detected.
Embodiment
As shown in Figures 1 to 4, the present invention includes plug 1, lock 2 disk 3, upper supporting plate seat 4, support plate 5, ring electrode 6, arm 7 goes up 8, tubular electrode 9, float electrode 11, steel pin 12, lower carrier plate seat 13, electric wire 14, cable 15, mandrel 16, the piece 17 that rises, fluting steel cylinder 18, spring 19 and under rise 20.
Described ring electrode 6 is to be made by copper plate, and profile is short cylindrical shape, and the side of ring electrode 6 is electrically connected with electric wire 14, and electric wire 14 is electrically connected with plug 1 by cable 15; Another wire 14 terminations are electrically connected with disk 3, and the other end also is to be electrically connected with plug 1 by cable 15; Also cover has three float electrodes 11 on ring electrode 6, and this float electrode 11 is riveted after by the copper plate bending, the rounded sharp mouth shape in its end, and kink is on ring electrode 6.
Described disk 3 is bowl-shape metal parts, and evenly riveting by 120 ° at the disk outside surface has 3 pairs of upper supporting plate seats 4, and described upper supporting plate seat 4 is made by 90 ° of strip iron plate bendings; Be fixedly connected with support plate 5 by rivet between every pair of upper supporting plate seat 4, described support plate 5 is strip plates of the parallelogram made by fiberglass, its upper end is pressed from both sides riveting in upper supporting plate seat 4, the lower end is pressed from both sides riveting in lower carrier plate seat 13, lower carrier plate seat 13 also is to be made by 90 ° of strip iron plate bendings, distributes and is riveted on the inner cylinder face of ring electrode 6 by 120 °.
3 central openings places are fixedly connected with an arm 7 by screw thread at described disk, and described arm 7 is the externally threaded hollow iron pipes of two ends band, and arm 7 lower ends 8 are fixedly connected with going up; At arm 7 centers a mandrel 16 is installed, mandrel 16 is elongated steel poles, and the upper end has circular hole radially, is installed with steel pin 12 in this circular hole, by steel pin 12 and locking 2 chain connections; Locking is solid whistle of 2 outer images, and described locking has a groove slightly wider than mandrel 16 to 2 following circular parts, in the vertical direction of this groove, is drilled with a through hole by rotund edge, is installed with steel pin 12 in this through hole.It is the common volute springs by the steel wire coiled that the lower end of mandrel 16 cover has spring 19, this spring 19, and being fixedly connected with down by screw thread bottom of mandrel 16 rises 20.
Go up 8 and lower rising 20 all be the same cone-shaped metal part of profile, its difference is the thread size difference of endoporus; Go up 8 and under 20 periphery of rising, three pieces 17 that rise also are installed, if three pieces 17 that rise are combined, profile be exactly complete, two ends are bell-mouthed cylindrical shapes; If separately, then be two ends be circular conical surface, both sides be 120 ° of angles the plane, inside and outside be the special block part on the face of cylinder.Three pieces 17 that rise are fixedly connected in the fluting steel cylinder 18, described fluting steel cylinder 18 is the cylinders that cylindrical sheet steel is rolled into, fluting is several fonts slit, the periphery of fluting steel cylinder 18 is being fixedly connected with tubular electrode 9, described tubular electrode 9 is made by copper sheet, and its profile is identical with fluting steel cylinder 18.
During use, tubular electrode 9 is disclosed in the steel pipe of panel weld to be measured and disclosed on earth, the plate good contact of the lower edge that makes ring electrode 6 and panel weld to be measured; To lock and pull 2 clockwise, because locking is the position of 2 interior installation steel pins 12 eccentric, along with the rotation of locking 2, mandrel 16 hinged with it is forced upwardly twitch, the other end at mandrel 16, lower the rising that is fixedly connected with mandrel 16 20 moves up, make go up 8 and lower 20 tension force that overcome spring 19 that rise squeeze to the centre; Owing to going up 8 and under 20 inside surface that rise are conical surfaces, can force the piece 17 that rises to be separated from each other, the profile that drives tubular electrode 9 enlarges, with the inwall close contact of the steel pipe of panel weld to be measured, snap-in force also makes the steel plate close contact of three float electrodes 11 and panel weld to be measured on the ring electrode 6; At this moment, pass into electric current between two electrodes, the magnetic field that utilizes this electric current to produce is sprayed magnetic and is detected defective.Although pipe is circular with the weld seam of plate, what two ring electrodes produced also is near-ring shape electric current, can test simultaneously the weld seam of a pipe.
Illustrated respectively the position of weld seam 21 to be detected among Fig. 3 and Fig. 4.
Claims (8)
1. a panel weld magnetic powder flaw detector comprises ring electrode, tubular electrode, cable and plug, and described ring electrode and disk are connected to plug by cable respectively, it is characterized in that,
Central authorities at described ring electrode are provided with a rosette, link into an integrated entity by the insulation support plate between described ring electrode and disk, and circumferentially are evenly equipped with at least three float electrodes at described ring electrode;
The metal arm of described disk mediad downward-extension one hollow, described arm lower end are fixedly connected with tip taper rising metal head down; One mandrel passes described arm and up and down two ends of arm are extended at two ends, is articulated with centering type locking handle in the upper end of described mandrel, is fixedly connected with the head that rises under the taper up of a tip in the lower end of described mandrel;
Be provided with spring between the head rising up and down of being oppositely arranged, and the some metals that are arranged on the nose cone section periphery of rising the up and down piece that rises, be nested with successively from inside to outside simultaneously fluting steel cylinder and fluting tubular electrode in the periphery of the piece that rises.
2. a kind of panel weld magnetic powder flaw detector according to claim 1 is characterized in that, described insulation support plate is glass epoxy, and connects by adaptor between described insulation support plate and the ring electrode.
3. a kind of panel weld magnetic powder flaw detector according to claim 1 and 2 is characterized in that, described float electrode, ring electrode, tubular electrode are the red copper member.
4. a kind of panel weld magnetic powder flaw detector according to claim 3 is characterized in that, the fluting in described fluting steel cylinder and the fluting tubular electrode is all the slit of a few word shapes.
5. a kind of panel weld magnetic powder flaw detector according to claim 3 is characterized in that, described arm is circular iron pipe, and arm up and down two ends is connected by screw thread with the head that is connected with disk respectively.
6. a kind of panel weld magnetic powder flaw detector according to claim 1 is characterized in that, the described piece that rises is three, is arranged in uniformly the head that rises up and down peripheral.
7. a kind of panel weld magnetic powder flaw detector according to claim 1 is characterized in that, described locking one has the eccentric block at locking dead point being, the eccentric block axle center is by steel pin and mandrel pivot joint.
8. a kind of panel weld magnetic powder flaw detector according to claim 7 is characterized in that, described mandrel is the steel pole, the lower end by screw thread with under rise the head be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310204123.2A CN103308595B (en) | 2013-05-28 | 2013-05-28 | A kind of panel weld magnetic powder flaw detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310204123.2A CN103308595B (en) | 2013-05-28 | 2013-05-28 | A kind of panel weld magnetic powder flaw detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103308595A true CN103308595A (en) | 2013-09-18 |
| CN103308595B CN103308595B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310204123.2A Expired - Fee Related CN103308595B (en) | 2013-05-28 | 2013-05-28 | A kind of panel weld magnetic powder flaw detector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103812U (en) * | 1991-10-22 | 1992-05-06 | 机电部机械院可靠性中心 | Single-hand flaw detector for permanent magnetic powder |
| CN101435797A (en) * | 2008-10-24 | 2009-05-20 | 捷特（北京）探伤设备有限公司 | Telescopic cross magnet yoke fluorescent magnetic powder flaw detection machine |
| KR20100000814U (en) * | 2008-07-16 | 2010-01-26 | 최은숙 | Magnetic flaw detector |
| CN202599903U (en) * | 2012-05-07 | 2012-12-12 | 南车戚墅堰机车有限公司 | Shaft type workpiece magnetic powder flaw detector |
| CN203275365U (en) * | 2013-05-28 | 2013-11-06 | 山东省特种设备检验研究院聊城分院 | Tube plate welding joint magnetic defect detector |
-
2013
- 2013-05-28 CN CN201310204123.2A patent/CN103308595B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103812U (en) * | 1991-10-22 | 1992-05-06 | 机电部机械院可靠性中心 | Single-hand flaw detector for permanent magnetic powder |
| KR20100000814U (en) * | 2008-07-16 | 2010-01-26 | 최은숙 | Magnetic flaw detector |
| CN101435797A (en) * | 2008-10-24 | 2009-05-20 | 捷特（北京）探伤设备有限公司 | Telescopic cross magnet yoke fluorescent magnetic powder flaw detection machine |
| CN202599903U (en) * | 2012-05-07 | 2012-12-12 | 南车戚墅堰机车有限公司 | Shaft type workpiece magnetic powder flaw detector |
| CN203275365U (en) * | 2013-05-28 | 2013-11-06 | 山东省特种设备检验研究院聊城分院 | Tube plate welding joint magnetic defect detector |
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| CN103308595B (en) | 2015-12-16 |
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Granted publication date: 20151216 Termination date: 20160528 |