CN106645383B - Magnetic memory detection device for cross pipeline welding seam - Google Patents
Magnetic memory detection device for cross pipeline welding seam Download PDFInfo
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- CN106645383B CN106645383B CN201611024066.XA CN201611024066A CN106645383B CN 106645383 B CN106645383 B CN 106645383B CN 201611024066 A CN201611024066 A CN 201611024066A CN 106645383 B CN106645383 B CN 106645383B
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Abstract
The invention provides a magnetic memory detection device for a cross pipeline welding seam, which is used for detecting the welding seam (5) between a straight pipe (3) and an inclined pipe (4), and comprises the following components: magnetic memory sensor detects actuating mechanism (1) and supplementary support (2) of adjusting, magnetic memory sensor detects actuating mechanism (1) and contains detecting element (103) and can overlap circular track (115) of locating outside pipe chute (4), detecting element (103) can be along the in-process that this circular track (115) removed to detecting welding seam (5) detect, this a magnetic memory detection device for crossing pipeline welding seam can carry out all-round accessible detection to the oblique crossing pipeline looks transversal fillet weld that has the small-angle region. The error of manual operation is greatly reduced during measurement, the smoothness and stability of the detection process and the accuracy of the measurement result are ensured, and the measurement efficiency is greatly improved.
Description
Technical Field
The invention relates to the field of nondestructive testing equipment of pipelines, in particular to a magnetic memory detection device for a small-angle fillet weld of a crossed pipeline.
Background
Fillet welds are widely applied to the fields of petrochemical industry, energy and electric power, railway bridges and the like, and particularly fillet welds exist in oil and gas long-distance pipelines, chemical pipelines, pressure vessels, flanges, valves, connecting and arranging pipes and the like in the field of petrochemical industry. Because the stress state of the fillet weld after bearing is complex, and most of single-side welding is easy to generate incomplete penetration defect during manufacturing, timely and effective nondestructive detection and evaluation work is extremely necessary.
But the defects of the fillet weld are difficult to find by the conventional nondestructive testing method, such as ultrasonic testing, and reflected waves are difficult to hit the weld part for the fillet weld, the pipe diameter is small and the pipe wall is thin; the magnetic flux leakage detection is limited by the space and the angle of the fillet weld, and the magnetizing device cannot uniformly magnetize the fillet weld; the X-ray flaw detection cannot judge the fillet weld defects in the pipeline installation stage or after in-service operation, is only suitable for the quality detection of the pipeline butt weld in the installation stage, has low detection rate of micro cracks after the pipeline operation, needs to completely discharge media in a system during shooting, and has high detection cost and low working efficiency; the common methods of magnetic powder, coloring and the like cannot find recessive cracks and internal air holes.
The metal magnetic memory detection technology can quickly, conveniently and effectively detect the stress concentration part and the defects of the welding seam, particularly the fillet welding seam, and can effectively diagnose the existing defects. Although the development history of the magnetic memory detection technology in our country is only ten years, the application prospect of the technology in early diagnosis and life prediction of ferromagnetic components has been generally accepted by experts and scholars in the industry. The metal magnetic memory can solve the problem of early diagnosis before damage of metal which cannot be solved by conventional nondestructive testing, and provides powerful technical support for ferromagnetic component failure and service life assessment, so that the metal magnetic memory has unique advantages in the field of nondestructive testing. However, in the field measurement process, the current magnetic memory detection has the problem that the diagonal pipe intersection fillet weld cannot pass through the detection device due to narrow space on the small-angle side, and the problem that the detection path of the space curve of the diagonal pipe intersection fillet weld is lack of an accurate detection device exists.
The metal magnetic memory technology is proposed by Debo of Russian scholars in the end of 20's 90's, is based on a piezomagnetic effect mechanism of ferromagnetic materials under the action of a geomagnetic field and a working load, orientation and irreversible re-trend of magnetic domain tissues can occur in a stress and deformation concentration region, stress distribution of a zero component can be reflected through magnetic field distribution, and the zero component can still be retained after the working load disappears. By detecting the magnetic field distribution on the surface of the component, not only can macroscopic defects of the component be found, but also dangerous areas with concentrated stress of ferromagnetic materials can be effectively detected, and the method is one of nondestructive detection technologies with wide prospects in the 21 st century. Meanwhile, the magnetic memory detection does not need to artificially magnetize the measured object, and the magnetic pollution of equipment is avoided.
While the metal magnetic memory technology is affirmed, due to the short time of generation and development, further improvement is needed in many aspects. Due to the fact that the measurement excessively depends on the proficiency and accuracy of manual operation, the measurement result is low in precision, the measurement efficiency is low, and the measurement repeatability is poor.
Disclosure of Invention
In order to further improve the application of the magnetic memory detection technology in fillet weld detection, the invention provides a magnetic memory detection device for a cross pipeline weld, which can carry out all-dimensional barrier-free detection on the fillet weld of the intersecting line of the oblique pipeline with a small-angle area. The error of manual operation during measurement is greatly reduced, the accuracy of the measurement result is ensured, and the measurement efficiency is greatly improved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a magnetic memory sensing device for intersecting pipe welds for sensing welds between straight and angled pipes, comprising:
the magnetic memory sensor detection driving mechanism comprises a detection unit and a circular track which can be sleeved outside the inclined tube, the detection unit is connected with the circular track, and the detection unit can detect a detection welding line in the process of moving along the circular track;
and the auxiliary adjusting bracket is used for enabling the plane where the circular track is located to be parallel to the central line of the straight pipe.
The invention has the beneficial effects that:
1. according to the invention, the circular track sleeved outside the inclined pipe is adopted, and the plane where the circular track is located is parallel to the central line of the straight pipe through the auxiliary adjusting bracket, so that the accuracy of the sensor in measuring the stroke and the clock direction along the intersecting line welding line during detection is ensured, and the defect positioning and detection result analysis errors caused by errors of the stroke and the clock direction are avoided.
2. The sliding block on the sliding rod is in a welding connection mode with the spherical main rod and the spherical auxiliary rod, and when the sliding rod moves in the circular sliding rail along the circumferential direction, the sliding rod does not swing along the tangential advancing direction of the sliding rail, so that the sliding rod is better in stability during sliding. Meanwhile, the matching position of the sliding rod and the circular sliding rail adopts the spherical sliding block, small-angle adjustment can be carried out along the radial direction of the sliding rail, and the sensor can be ensured to pass through a narrow area at the small-angle side of the fillet weld of the oblique pipeline smoothly without obstacles by adjusting the angle of the sensor clamping mechanism with the strip-shaped sliding way, so that the detection continuity is ensured.
3. The sliding rod is connected with the sensor clamping mechanism with the strip-shaped slideway through the locking screw, the sensor is ensured to be vertically aligned to a weld joint to be measured by rotating the sensor clamping mechanism with the strip-shaped slideway, the sensor clamping mechanism with the strip-shaped slideway is provided with the roller, the roller is always attached to the wall surface of a pipeline, the stability during measurement is ensured, the accuracy of measurement is finally ensured, and the measurement efficiency is greatly improved.
4. The invention adopts the compression block connected by the spherical hinge, so that the device can be tightly attached to an inclined pipeline with any inclination angle without slipping off, and the sensor detection driving device is fastened.
5. The leveling bracket is matched with the sensor detection driving device for use, the sensor detection driving device can be conveniently, quickly and accurately adjusted to reach the level, the leveling bracket can be flexibly, conveniently and quickly disassembled after the leveling is finished, and the influence on the movement of the subsequent detection driving device is avoided.
6. The device can accurately measure the small-angle weld joint of the crossed manifold, and reduces the difficulty of measuring the small-angle weld joint of the oblique pipeline in the prior art.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a magnetic memory detection device for a cross pipe weld in use.
FIG. 2 is a schematic diagram of a detection driving mechanism of a magnetic memory sensor.
Fig. 3 is a schematic structural diagram of the slide bar.
FIG. 4 is a schematic view of a sensor clamping mechanism.
Fig. 5 is a schematic structural view of the roller.
Fig. 6 is a partially enlarged schematic view of the slide bar and the slide rail.
Fig. 7 is a rear view structural diagram of the pressing block.
Fig. 8 is a front view of the compact.
Fig. 9 is a schematic structural view of a ball bolt.
Fig. 10 is a schematic view of the structure of the gasket.
Fig. 11 is a schematic structural view of an auxiliary leveling bracket.
Fig. 12 is a left side view of the auxiliary leveling bracket.
FIG. 13 is a schematic view of a stud.
1. A magnetic memory sensor detection drive mechanism; 2. an auxiliary horizontal adjustment bracket; 3. a straight pipe; 4. an inclined tube; 5. welding seams;
101. a combined circular ring; 102. a slide bar; 103. a detection unit; 104. a sensor clamping mechanism; 105. a sensor; 106. a spherical universal wheel; 107. a hold-down mechanism; 108. a ball bolt; 109. a compression block; 110. a screw; 111. a nut; 112. a screw; 113. a nut; 114. a gasket; 115. a circular track; 116. an auxiliary lever.
201. A stud; 202. a transverse support frame; 203. fixing a nut; 204. a transverse support frame level; 205. a fixture; 206. locking the nut; 207. a longitudinal support frame; 208. a longitudinal support frame level; 209. and adjusting the nut.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A magnetic memory detection device for a cross pipeline welding seam can be used for detecting a welding seam 5 between a straight pipe 3 and an inclined pipe 4, and comprises a magnetic memory sensor detection driving mechanism 1 and an auxiliary adjusting bracket 2, wherein the magnetic memory sensor detection driving mechanism 1 comprises a detection unit 103 and a circular track 115 which can be sleeved outside the inclined pipe 4, the detection unit 103 is connected with the circular track 115, and the detection unit 103 can detect the detection welding seam 5 in the process of moving along the circular track 115; the auxiliary adjusting bracket 2 is used for supporting the magnetic memory sensor detection driving mechanism 1 and enabling the plane of the circular track 115 to be parallel to the central line of the straight pipe 3, as shown in figure 1.
In this embodiment, the magnetic memory sensor detection driving mechanism 1 is further provided with a combined circular ring 101 capable of being sleeved outside the inclined tube 4, the combined circular ring 101 is formed by butting a left half circular arc body and a right half circular arc body, the left half circular arc body and the right half circular arc body are identical in size and shape, the circular track 115 is located on the surface, facing the straight tube 3, of the combined circular ring 101, that is, in fig. 1, the circular track 115 is located on the lower surface of the combined circular ring 101, and the circular track 115 and the combined circular ring 101 are in a concentric circle relationship.
In this embodiment, the detecting unit 103 includes a sliding rod 102 and a sensor clamping mechanism 104, an upper end of the sliding rod 102 is inserted into the circular track 115, a round ball for preventing the sliding rod 102 from separating from the circular track 115 is disposed at an upper end of the sliding rod 102, a lower end of the sliding rod 102 is connected to an upper end of the sensor clamping mechanism 104, and the sensor clamping mechanism 104 is capable of rotating relative to the sliding rod 102. The sliding rod 102 is fixedly connected with an auxiliary rod 116, the auxiliary rod 116 is inclined relative to the sliding rod 102, the upper end of the auxiliary rod 116 is inserted into the circular track 115, the lower end of the auxiliary rod 116 is welded with the sliding rod 102, one end of the auxiliary rod 116 is provided with a round ball for preventing the auxiliary rod 116 from being separated from the circular track 115, and the auxiliary rod 116 and the sliding rod 102 can synchronously slide along the circular track 115, as shown in fig. 1 to 6. The auxiliary rod 116 has a stabilizing function, and when the sliding rod 102 slides in the circumferential direction in the circular track 115, the sliding rod 102 does not swing in the tangential advancing direction of the circular track 115, so that the sliding rod 102 has better stability during sliding.
In this embodiment, the sensor clamping mechanism 104 is in a bar shape, one end of the sensor clamping mechanism 104 is hinged to the lower end of the sliding rod 102 through a screw 112 and a nut 113, a central line of the screw 112 is perpendicular to the sliding rod 102, a central line of the screw 112 can be perpendicular to a diameter of the circular track 115, that is, a central line of the screw 112 is perpendicular to a diameter of the circular track 115 passing through the central line of the screw 112, a bar-shaped through hole (which functions as a bar-shaped slideway) is formed in the sensor clamping mechanism 104, the bar-shaped through hole is arranged along the length direction of the sensor clamping mechanism 104, as shown in fig. 2, the screw 112 passes through the bar-shaped through hole, the lower end of the sliding rod 102 can slide along the bar-shaped through hole, the diameter of the screw 112 is matched with the width of the bar-shaped through hole, so that the, the sensor 105 is inserted into the sensor clamping mechanism 104, a detection part of the sensor 105 is positioned at the other end of the sensor clamping mechanism 104, and a spherical universal roller 106 is further arranged at the other end of the sensor clamping mechanism 104. Spherical universal gyro wheel 106 can drive sensor 105 and laminate on such space curve detection route of intersecting line welding seam to smoothly pass through the narrow region of oblique crossing pipeline low-angle side fillet welding seam, finally realize around intersecting line fillet welding seam all-round unobstructed comprehensive detection of smoothness, sensor 105's detection portion is located spherical universal wheel 106's top, as shown in fig. 1.
In the present embodiment, the magnetic memory sensor detection driving mechanism 1 is further provided with a plurality of pressing mechanisms 107 uniformly distributed along the axis of the combined ring 101, and the pressing mechanisms 107 can enable the center of the combined ring 101 to be located on the axis of the inclined tube 4, as shown in fig. 1 and 2. The pressing mechanism 107 comprises a spherical bolt 108 and a pressing block 109, the pressing block 109 is arranged in the inner circle of the combined ring 101, the section of the pressing block 109 is arc-shaped, the screw part of the spherical bolt 108 penetrates through the combined ring 101, the central line of the screw part of the spherical bolt 108 is arranged along the radial direction of the combined ring 101, and the head part of the spherical bolt 108 is inserted into the pressing block 109 to form a spherical hinge. The tail end of the screw portion of the ball screw 108 is disposed outside the outer circle of the combined ring 101, and the tail end of the screw portion of the ball screw 108 is provided with a quadrangular structure for screwing the ball screw 108, which is convenient for assembling and disassembling the pressing mechanism 107, as shown in fig. 2.
In the above structure, the left semicircular arc body and the right semicircular arc body of the combined circular ring 101 are connected and fixed by the locking screw, the sliding rod 102 makes a circular motion in the circular track 115, the sphere at the upper end of the sliding rod 102 can swing at a small radial angle in the process of making the circular motion, so as to adjust the sensor clamping mechanism 104 at a small angle, for example, the sliding rod 102 can adjust at an angle of 0-60 ° relative to a plumb line passing through the sphere at the upper end of the sliding rod 102, as shown in fig. 2, the auxiliary rod 116 plays a role of stabilizing, when the sliding rod 102 moves in the circumferential direction in the circular track 115 (i.e., the sliding rail), the sliding rod 102 does not swing in the tangential advancing direction of the circular track 115, so that the sliding rod 102 has better stability in sliding.
The sensor clamping mechanism 104 is connected with the sliding rod 102 through a locking screw 112, a spherical universal wheel is arranged at the lower end of the sensor clamping mechanism 104 with a strip-shaped slideway, the sensor clamping mechanism 104 realizes sliding and rotating adjustment through the slideway, the roller is ensured to drive the sensor 105 to be attached to a space curve detection path such as an intersecting line fillet weld and smoothly pass through a narrow area on the small angle side of the diagonal pipeline fillet weld, and finally, smooth and barrier-free comprehensive detection around the intersecting line fillet weld is realized.
The pressing block 109 is connected with one end of the ball-shaped bolt 108 by a spherical hinge, the pressing block 109 on the arc-shaped sliding rail can be better clamped on the wall surface of any inclined pipeline by adopting the connection, the combined ring 101 is uniformly provided with a plurality of threaded through holes for installing the ball-shaped bolt 108 in the circumferential direction, the number of the threaded through holes can be 2, 4 or 6, the other end of the ball-shaped bolt 108 is connected with screw holes distributed in the circumferential direction of the combined ring 101, the tightness degree can be adjusted according to the pipe diameter to be clamped to ensure that the device is tightly contacted with the pipe wall, the adjusting degree is 20 to 30 percent, diamond-shaped saw teeth are adopted on the inner side of the pressing block 109, the pressing block 109 can be well attached to the wall surface of the inclined tube 4 with any inclination angle, so that the circular track 115 is ensured not to slide along the wall surface of the inclined tube 4, the stability of the detection device is improved, and human errors are reduced, as shown in fig. 1 to 8. The magnetic memory detection device is also suitable for accurate measurement of a space curve detection path similar to an intersecting line fillet weld of an oblique pipeline.
In this embodiment, the auxiliary adjusting bracket 2 includes two fixtures 205, four studs 201, and two strip-shaped longitudinal support frames 207, the annular fixture 205 is used to be sleeved outside the straight pipe 3, the two longitudinal support frames 207 are connected to the two fixtures 205 through the four studs 201, and the two longitudinal support frames 207 are a first longitudinal support frame and a second longitudinal support frame, respectively; the first longitudinal supporting frame and the second longitudinal supporting frame are respectively located at two sides outside the inclined tube 4, the combined ring 101 is located on the first longitudinal supporting frame and the second longitudinal supporting frame, and the combined ring 101 is located above the two fixtures 205, as shown in fig. 1 and 10.
In this embodiment, the inner diameter of the fixture 205 is matched with the outer diameter of the straight pipe 3, the fixture 205 is composed of two symmetrical arc-shaped half fixture bodies, the size and the shape of the two arc-shaped half fixture bodies are also the same, the four studs 201 are respectively a first stud, a second stud, a third stud and a fourth stud, and the two fixtures 205 are respectively a first fixture and a second fixture; the first fixture and the second fixture are arranged on two sides of the welding seam 5 along the axial direction of the straight pipe 3, the axial lines of the first fixture and the second fixture are overlapped, the first stud, the second stud, the third stud and the fourth stud are parallel to each other, the first longitudinal support frame and the second longitudinal support frame are parallel to each other, and the distance between the first longitudinal support frame and the second longitudinal support frame is smaller than the outer diameter of the combined ring 101; the lower ends of the first stud and the second stud form the first fixture through the two symmetrical arc-shaped half-clamping bodies of the first fixture through the fixing nut 203, the lower ends of the third stud and the fourth stud form the second fixture through the two symmetrical arc-shaped half-clamping bodies of the second fixture through the fixing nut 203, the two ends of the first longitudinal supporting frame are respectively inserted into the upper ends of the first stud and the third stud, and the two ends of the second longitudinal supporting frame are respectively inserted into the upper ends of the second stud and the fourth stud.
In this embodiment, the auxiliary adjusting bracket 2 further includes two strip-shaped transverse supporting frames 202, the length of the transverse supporting frame 202 is smaller than the length of the longitudinal supporting frame 207, the two transverse supporting frames 202 are parallel to each other, the transverse supporting frame 202 is perpendicular to the longitudinal supporting frame 207, the two transverse supporting frames 202 are respectively a first transverse supporting frame and a second transverse supporting frame, two ends of the first transverse supporting frame are respectively inserted into upper ends of the first stud and the second stud, two ends of the second transverse supporting frame are respectively inserted into upper ends of the third stud and the fourth stud, the first transverse supporting frame is located below the first longitudinal supporting frame, the second transverse supporting frame is located below the second longitudinal supporting frame, each stud 201 is provided with an adjusting nut 209 for adjusting the positions of the transverse supporting frame 202 and the longitudinal supporting frame 207, each stud 201 is provided with a locking nut 209 for connecting and fixing the transverse supporting frame 202 and the longitudinal supporting frame 207, the adjusting nut 209 is located below the locking nut 209, the transverse support frame 202 and the longitudinal support frame 207 are located between the adjusting nut 209 and the locking nut 209, the transverse support frame 202 is provided with the transverse support frame level 204, and the longitudinal support frame 207 is provided with the longitudinal support frame level 208, as shown in fig. 10 to 12.
The combined circular ring 101, the sliding rod 102 and the sensor clamping mechanism 104 with the strip-shaped slideway of the magnetic memory detection device are all made of non-magnetic materials such as aluminum alloy or copper alloy, and the pressing block 109 is made of composite non-magnetic materials with good resilience; the bolts, screws, springs and the like used for various connections and locking are made of non-magnetic stainless steel materials which do not influence the measured magnetic signals.
The installation and use of the magnetic memory sensing device will now be described. The combined circular ring 101 with the circular track 115 is formed by fixedly combining a left half circular arc body and a right half circular arc body with arc tracks through a screw 110 and a nut 111, three threaded holes for installing a pressing block 109 are uniformly distributed on the left half circular arc body and the right half circular arc body, before the combined circular ring 101 with the circular track 115 is formed, the upper end of a sliding rod 102 is firstly installed in the left half circular arc body or the right half circular arc body with the tracks, then the two half circular arc bodies with the tracks are connected and fixed through the screw 110 and the nut 111, the sliding rod 102 can do circular motion in the circular track 115, the stroke in the measuring process is ensured to be accurate, radial angle adjustment of 0-60 degrees can be performed in the circular motion process, the phenomenon of blocking cannot occur in the measuring process, and the continuity in the measuring process is ensured. The detection unit 103 comprises a sliding rod 102, a sensor clamping mechanism 104, a roller 106 and a sensor 105, wherein a screw 112 penetrates through a track of the sensor clamping mechanism 104 and a lower end unthreaded hole of the sliding rod 102 and is fixed by a nut 113, the sensor clamping mechanism 104 is in threaded connection with the roller 106, the sensor 105 is packaged in the sensor clamping mechanism 104, the sensor can be ensured to be perpendicular to a intersecting line welding seam by rotating the sensor clamping mechanism 104 in the detection unit 103, the roller 106 on the sensor clamping mechanism 103 can ensure that the detection mechanism 103 is attached to the wall surface of a pipeline in the measurement process, and the stability in the measurement process is ensured. The pressing mechanism 107 is composed of a spherical bolt 108 and a pressing block 109, after a spherical end of the spherical bolt 108 is placed in a hole in the pressing block 109, a gasket 114 is added for clamping to form spherical hinge connection, the other end of the spherical bolt 108 and a screw hole of the circular outer ring 101 form screw thread connection, a square block (namely a quadrangular prism) for adjusting a hand is arranged at the end part of the screw thread end of the spherical bolt 108, so that the rotation detection device 1 can be fastened on the inclined tube 4, looseness cannot occur, and the detection effect is influenced, the pressing mechanism 107 is installed in screw holes of a left half arc body and a right half arc body of the circular track 115, then the two half arc bodies form a combined circular ring 101, the pressing blocks 109 in the pressing mechanism 107 are symmetrically installed, the number of the pressing blocks is determined according to the size of the tube diameter, and the pressing blocks are respectively 2 pairs, 4 pairs and 6 pairs and are installed in pairs.
As shown in fig. 11 to 13, the auxiliary horizontal adjustment bracket includes 4 long studs 201, two horizontal support frames 202, two vertical support frames 207, two clamps 205, a horizontal instrument 204 for the horizontal support frames, a horizontal instrument 208 for the vertical support frames, a clamp 205 installed on one side of the pipeline is slightly tightened with 2 pairs of nuts 203 by using the lower ends of the studs 201, then the horizontal support frames 202 are installed, an adjusting nut 209 is put into the upper end of each of the 2 studs before the horizontal support frames are put into the horizontal support frames, then the horizontal support frames 202 are put on to adjust the levelness by using the horizontal instrument 204, after the levelness is adjusted, the clamps 205 are locked, the distance from the upper end surface position of the lug plate of the clamp 205 to the lower end surface of the horizontal support frame 202 is measured by a tape measure, then the clamp 205 is installed on the other end, the lower ends of the studs 201 are slightly tightened with 2 pairs of nuts 206, then the horizontal support frames 202 are installed, before the horizontal support frames are put into the horizontal support frames, the adjusting nut 209 is placed at the upper end of 2 long stud head bolts, then the transverse supporting frame 202 is placed, the levelness is adjusted through the level meter 204, after the levelness is adjusted, the fixture 205 is locked, the distance from the lower end face of the transverse supporting frame 202 at one end to the upper end face of the lug plate of the fixture 205 at one end is equal to the distance measured at the previous end through the adjusting nut 209, the transverse supporting frames 202 at two ends are ensured to be on the same horizontal plane, finally the longitudinal supporting frame 207 is placed, the levelness is finely adjusted through the levelness 208 of the longitudinal supporting frame, the error caused by measuring through a tape measure before is eliminated, and finally the longitudinal supporting frame is locked at the upper end of the long stud bolt through the nut 206.
As shown in fig. 1 to 13, the magnetic memory sensor detection driving device 1 is placed on the supporting frame after the auxiliary horizontal adjusting bracket 2 is installed, and it should be noted that the screw locking part of the combined ring 101 with the track is placed on the longitudinal supporting frame of the horizontal adjusting bracket to facilitate the adjustment of the pressing mechanism 107. If the measured height is found to be inappropriate, the height can be adjusted simultaneously for 4 adjusting nuts of the level adjustment device until the appropriate measured height is found. After the installation and fastening of the rotation detection device 1 are completed, the horizontal adjusting device can be detached, and the subsequent measurement process cannot be influenced.
Because the fillet weld can not be detected by the conventional nondestructive detection method, and the fillet weld is often positioned at the discontinuous part of the structure and is easy to generate stress concentration, the fillet weld is easy to leak, explode and other accidents after being put into use. The metal magnetic memory detection technology can quickly, conveniently and effectively detect stress concentration parts and defects of fillet welds, but the problem that the diagonal pipeline intersection fillet welds cannot pass through a narrow-angle side due to a narrow space detection device is currently encountered, and meanwhile, the problem that the detection path of the space curve of the diagonal pipeline intersection fillet welds lacks an accurate detection device exists.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features, the technical schemes and the technical schemes can be freely combined and used.
Claims (2)
1. A magnetic memory detection device for intersecting pipe welds for detecting welds (5) between straight (3) and inclined (4) pipes, characterized in that it comprises:
the magnetic memory sensor detection driving mechanism (1) comprises a detection unit (103) and a circular track (115) which can be sleeved outside the inclined tube (4), the detection unit (103) is connected with the circular track (115), and the detection unit (103) can detect a detection welding seam (5) in the process of moving along the circular track (115);
the auxiliary adjusting bracket (2) is used for enabling the plane where the circular track (115) is located to be parallel to the central line of the straight pipe (3);
the magnetic memory sensor detection driving mechanism (1) is also provided with a combined circular ring (101) which can be sleeved outside the inclined tube (4), the combined circular ring (101) is formed by butt joint of a left semi-circular arc body and a right semi-circular arc body, a circular track (115) is positioned on the surface of the combined circular ring (101) facing the straight tube (3), and a concentric circle is formed between the circular track (115) and the combined circular ring (101);
the detection unit (103) comprises a sliding rod (102) and a sensor clamping mechanism (104), one end of the sliding rod (102) is inserted into the circular track (115), a round ball used for preventing the sliding rod (102) from being separated from the circular track (115) is arranged at one end of the sliding rod (102), the other end of the sliding rod (102) is connected with one end of the sensor clamping mechanism (104), and the sensor clamping mechanism (104) can rotate relative to the sliding rod (102);
the sliding rod (102) is fixedly connected with an auxiliary rod (116), the auxiliary rod (116) inclines relative to the sliding rod (102), one end of the auxiliary rod (116) is inserted into the circular track (115), one end of the auxiliary rod (116) is provided with a round ball for preventing the auxiliary rod (116) from being separated from the circular track (115), and the auxiliary rod (116) and the sliding rod (102) can synchronously slide along the circular track (115);
the sensor clamping mechanism (104) is in a strip shape, one end of the sensor clamping mechanism (104) is hinged with the other end of the sliding rod (102) through a screw (112) and a nut (113), the central line of the screw (112) is perpendicular to the sliding rod (102), the central line of the screw (112) can be perpendicular to the diameter of the circular track (115), a strip-shaped through hole is formed in the sensor clamping mechanism (104) and arranged along the length direction of the sensor clamping mechanism (104), the screw (112) penetrates through the strip-shaped through hole, the other end of the sliding rod (102) can slide along the strip-shaped through hole, the sensor clamping mechanism (104) can only rotate by taking the central line of the screw (112) as an axis, the detection unit (103) further comprises a sensor (105), the sensor (105) is inserted in the sensor clamping mechanism (104), and the detection part of the sensor (105) is positioned at the other end of the sensor, the other end of the sensor clamping mechanism (104) is also provided with a spherical universal roller (106);
the auxiliary adjusting support (2) comprises two fixtures (205), four double-end studs (201) and two strip-shaped longitudinal supporting frames (207), the annular fixtures (205) are sleeved outside the straight pipe (3), the two longitudinal supporting frames (207) are connected with the two fixtures (205) through the four double-end studs (201), and the two longitudinal supporting frames (207) are respectively a first longitudinal supporting frame and a second longitudinal supporting frame; the first longitudinal supporting frame and the second longitudinal supporting frame are respectively positioned at two sides outside the inclined tube (4), and the combined circular ring (101) is positioned on the first longitudinal supporting frame and the second longitudinal supporting frame;
the inner diameter of the fixture (205) is matched with the outer diameter of the straight pipe (3), the fixture (205) is composed of two symmetrical arc-shaped half fixture bodies, four stud bolts (201) are respectively a first stud bolt, a second stud bolt, a third stud bolt and a fourth stud bolt, and the two fixtures (205) are respectively a first fixture and a second fixture;
the first fixture and the second fixture are arranged on two sides of the welding seam (5) along the axial direction of the straight pipe (3), the axial lines of the first fixture and the second fixture are overlapped, the first stud, the second stud, the third stud and the fourth stud are parallel to each other, the first longitudinal support frame and the second longitudinal support frame are parallel to each other, and the distance between the first longitudinal support frame and the second longitudinal support frame is smaller than the outer diameter of the combined circular ring (101);
the lower ends of the first stud and the second stud form the first fixture by using two symmetrical arc-shaped half-clamping bodies of the first fixture through a fixing nut (203), the lower ends of the third stud and the fourth stud form the second fixture by using two symmetrical arc-shaped half-clamping bodies of the second fixture through a fixing nut (203), the two ends of the first longitudinal support frame are respectively inserted into the upper ends of the first stud and the third stud, and the two ends of the second longitudinal support frame are respectively inserted into the upper ends of the second stud and the fourth stud;
the auxiliary adjusting bracket (2) also comprises two strip-shaped transverse supporting frames (202), the length of each transverse supporting frame (202) is smaller than that of each longitudinal supporting frame (207), the two transverse supporting frames (202) are parallel to each other, the transverse supporting frames (202) are perpendicular to the longitudinal supporting frames (207), the two transverse supporting frames (202) are respectively a first transverse supporting frame and a second transverse supporting frame, two ends of the first transverse supporting frame are respectively inserted into the upper ends of the first stud and the second stud, two ends of the second transverse supporting frame are respectively inserted into the upper ends of the third stud and the fourth stud, the first transverse supporting frame is positioned below the first longitudinal supporting frame, the second transverse supporting frame is positioned below the second longitudinal supporting frame, each stud (201) is provided with an adjusting nut (209) for adjusting the positions of the transverse supporting frames (202) and the longitudinal supporting frames (207), each stud (201) is provided with a locking nut (209) for connecting and fixing the transverse supporting frame (202) and the longitudinal supporting frame (207), the transverse supporting frame (202) is provided with a transverse supporting frame level gauge (204), and the longitudinal supporting frame (207) is provided with a longitudinal supporting frame level gauge (208);
the magnetic memory sensor detection driving mechanism (1) is also provided with a plurality of pressing mechanisms (107) which are uniformly distributed along the axis of the combined circular ring (101), and the pressing mechanisms (107) can enable the circle center of the combined circular ring (101) to be positioned on the axis of the inclined tube (4);
the pressing mechanism (107) comprises a spherical bolt (108) and a pressing block (109), the pressing block (109) is arranged in the inner circle of the combined circular ring (101), the section of the pressing block (109) is arc-shaped, the inner surface of the pressing block (109) is of a rhombic sawtooth structure, the screw part of the spherical bolt (108) penetrates through the combined circular ring (101), the central line of the screw part of the spherical bolt (108) is arranged along the radial direction of the combined circular ring (101), and the head part of the spherical bolt (108) is inserted into the pressing block (109) to form a spherical hinge.
2. The magnetic memory detection device for the cross pipe weld according to claim 1, characterized in that the tail end of the screw part of the ball bolt (108) is arranged outside the outer circle of the combined ring (101), and the tail end of the screw part of the ball bolt (108) is provided with a quadrangular prism structure.
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| CN201611024066.XA CN106645383B (en) | 2016-11-17 | 2016-11-17 | Magnetic memory detection device for cross pipeline welding seam |
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| CN108572216A (en) * | 2017-12-14 | 2018-09-25 | 湘潭宏远电子科技有限公司 | A kind of pipe surface shear crack measuring device |
| CN107894296A (en) * | 2017-12-20 | 2018-04-10 | 成都大漠石油技术有限公司 | A kind of ultrasound examination track-type facilities for petroleum pipeline weld seam |
| CN107902005A (en) * | 2017-12-20 | 2018-04-13 | 成都大漠石油技术有限公司 | A kind of automatically walk system of the flaw detection trolley of pipeline-weld |
| CN108188058A (en) * | 2017-12-28 | 2018-06-22 | 东莞市天合机电开发有限公司 | The stripping jig of rubber wheel on a kind of paper-sheets rolling wheel |
| CN108274170A (en) * | 2018-01-25 | 2018-07-13 | 成都科盛石油科技有限公司 | A kind of automatically walk method of petroleum pipeline weld seam trolley |
| CN109448875B (en) * | 2018-12-21 | 2024-04-09 | 核动力运行研究所 | Anti-falling structure for welding line detection equipment |
| CN110425343A (en) * | 2019-07-01 | 2019-11-08 | 东莞市建安集团有限公司 | A kind of electromechanical pipeline mounting structure and its construction method |
| CN111983175B (en) * | 2020-08-25 | 2023-01-24 | 西安建筑科技大学 | Metal magnetic memory detection device and detection method suitable for multi-section metal beam |
| CN112505284B (en) * | 2020-11-23 | 2022-08-05 | 重庆公共运输职业学院 | Quick detection device of job site large-scale bridge bracket damage |
| CN113154267A (en) * | 2021-03-10 | 2021-07-23 | 北京航空工程技术研究中心 | Non-invasive pipe wall clamping sensor for pipeline detection |
| CN115533376B (en) * | 2022-10-08 | 2023-06-13 | 山东森峰激光装备有限公司 | Multi-angle intersecting line welding seam automatic welding device for large-caliber pipeline |
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| JPH09325131A (en) * | 1996-06-03 | 1997-12-16 | Japan Steel & Tube Constr Co Ltd | Magnetizing device for flaw-probing fillet welding part |
| JPH1183817A (en) * | 1997-09-03 | 1999-03-26 | Toshiba Corp | Pipe welding part inspection apparatus and ultrasonic flaw detection method |
| CN1208618C (en) * | 2003-06-12 | 2005-06-29 | 上海交通大学 | Robot automatic detection system of intersecting pipeline welded seam |
| CN201497727U (en) * | 2009-08-17 | 2010-06-02 | 广东电网公司电力科学研究院 | Tube support fillet weld metallic magnetic memory probe |
| CN102486942B (en) * | 2010-12-02 | 2015-03-25 | 核动力运行研究所 | Ultrasonic automatic checking tool for dissimilar metal welding seam of top cover instrument measuring pipe |
| CN103723309A (en) * | 2013-11-25 | 2014-04-16 | 安徽赛耐尔机械制造有限公司 | Vertical-type plastic film sealing machine |
| CN105548351A (en) * | 2016-02-22 | 2016-05-04 | 衡阳镭目科技有限责任公司 | Device for monitoring existence of liquid metal in pipeline |
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