CN203275365U - Tube plate welding joint magnetic defect detector - Google Patents
Tube plate welding joint magnetic defect detector Download PDFInfo
- Publication number
- CN203275365U CN203275365U CN 201320299959 CN201320299959U CN203275365U CN 203275365 U CN203275365 U CN 203275365U CN 201320299959 CN201320299959 CN 201320299959 CN 201320299959 U CN201320299959 U CN 201320299959U CN 203275365 U CN203275365 U CN 203275365U
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- electrode
- disk
- magnetic powder
- flaw detector
- head
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Abstract
The utility model discloses a tube plate welding joint magnetic defect detector, and relates to a magnetic defect detector for solving the problem that the weld defect of the welding joint of the tube plate of the heat exchanger is inconvenient for examining. The tube plate welding joint magnetic defect detector comprises an annular electrode, a tubular electrode, a branch pipe, a disk, a support plate, an upper expansion head, a lower expansion head, an expansion block, a spindle, a slotted steel cylinder, a wire, a cable and an electric plug, wherein the annular electrode is fixed by the support plate below the disk, the branch pipe is fixed on the lower surface of the disk, the spindle is arranged in the branch pipe, the lower parts of the branch pipe and the spindle are respectively and fixedly connected with the upper expansion head and the lower expansion head, the externals of the upper expansion head and the lower expansion head are orderly provided with the expansion block, the slotted steel cylinder and the tubular electrode, the electric plug is electrically connected with the disk through the cable, and the electric plug is electrically connected with the annular electrode through the cable. A magnetic field generated by the current is introduced between the annular electrode and the tubular electrode, the magnetic particle is sprayed to examine the welding joint defect, the efficiency for examining the welding defect of the welding joint of the tube plate of the heat exchanger is effectively improved, and the leak detection is avoided.
Description
Technical field
The utility model relates to a kind of magnetic powder flaw detector, and is 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, there is no 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 managing with 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.
The utility model content
The purpose of this utility model is to provide a kind of panel weld magnetic powder flaw detector, the magnetic field that produces by pass into electric current between ring electrode and tubular electrode, 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 technical scheme in the invention for solving the technical problem is: a kind of panel weld magnetic powder flaw detector, comprise ring electrode, tubular electrode, arm, disk, support plate, rise head, under 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, link into an integrated entity by the insulation support plate between described ring electrode and disk, 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 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 two ends, arm up and down 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 upper and lower the rising that is oppositely arranged the spring that is enclosed within on mandrel between head, 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 tubular electrode is several fonts gaps;
Described disk and ring electrode are electrically connected to plug by cable respectively.
Described insulation support plate is glass epoxy, and connects by adaptor between described insulation support plate and ring electrode.
Described float electrode, ring electrode, tubular electrode are the red copper member.
Described arm is circular iron pipe.
The beneficial effects of the utility model are: the magnetic field that produces by pass into electric current between ring electrode and tubular electrode, and spray the magnetic particle inspection weld defect, effectively improved the heat exchanger panel weld and carried out weld defects power of tests rate, and avoided undetected.
Description of drawings
Fig. 1 is 3 d effect graph of the present utility model;
Fig. 2 is cut-open view of the present utility model;
Fig. 3 is the utility model fundamental diagram step 1;
Fig. 4 is the utility model fundamental diagram step 2;
In 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 gaps, 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 utility model comprises plug 1, locks 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 to electric wire 14, and electric wire 14 is electrically connected to plug 1 by cable 15; Another wire 14 terminations are electrically connected to disk 3, and the other end is also to be electrically connected to 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 is also 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 with 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 that are coiled into by steel wire 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 under to rise 20 be all 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, 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 a fluting steel cylinder 18, described fluting steel cylinder 18 is the cylinders that cylindrical sheet steel is rolled into, fluting is several fonts gap, 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 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, rising under being fixedly connected with mandrel 16 20 moves up, make go up 8 and under 20 tension force that overcome spring 19 that rise squeeze to the centre; Due to go 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 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 is also 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 in Fig. 3 and Fig. 4.
Claims (8)
1. a panel weld magnetic powder flaw detector, comprise 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 is fixedly connected with tip taper rising metal head down; One mandrel passes described arm and two ends, arm up and down 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 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 fluting steel cylinder and fluting tubular electrode simultaneously 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 connect by adaptor between described insulation support plate and 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 fluting tubular electrode is all the gap 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 two ends, arm up and down are 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 |
|---|---|---|---|
| CN 201320299959 CN203275365U (en) | 2013-05-28 | 2013-05-28 | Tube plate welding joint magnetic defect detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320299959 CN203275365U (en) | 2013-05-28 | 2013-05-28 | Tube plate welding joint magnetic defect detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275365U true CN203275365U (en) | 2013-11-06 |
Family
ID=49505744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320299959 Withdrawn - After Issue CN203275365U (en) | 2013-05-28 | 2013-05-28 | Tube plate welding joint magnetic defect detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308595A (en) * | 2013-05-28 | 2013-09-18 | 山东省特种设备检验研究院聊城分院 | Tube sheet welding line magnetic defect detector |
| RU213724U1 (en) * | 2021-10-13 | 2022-09-26 | Общество с ограниченной ответственностью "Константа" | DEVICE FOR DEFECTOSCOPY OF INTERNAL PIPE COATING |
-
2013
- 2013-05-28 CN CN 201320299959 patent/CN203275365U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308595A (en) * | 2013-05-28 | 2013-09-18 | 山东省特种设备检验研究院聊城分院 | Tube sheet welding line magnetic defect detector |
| CN103308595B (en) * | 2013-05-28 | 2015-12-16 | 山东省特种设备检验研究院聊城分院 | A kind of panel weld magnetic powder flaw detector |
| RU213724U1 (en) * | 2021-10-13 | 2022-09-26 | Общество с ограниченной ответственностью "Константа" | DEVICE FOR DEFECTOSCOPY OF INTERNAL PIPE COATING |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |