CN115825249A - Plug-in tube seat fillet weld phased array detection simulation test block for power station boiler - Google Patents
Plug-in tube seat fillet weld phased array detection simulation test block for power station boiler Download PDFInfo
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- CN115825249A CN115825249A CN202111381922.8A CN202111381922A CN115825249A CN 115825249 A CN115825249 A CN 115825249A CN 202111381922 A CN202111381922 A CN 202111381922A CN 115825249 A CN115825249 A CN 115825249A
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Abstract
The invention discloses a power station boiler plug-in tube seat fillet weld phased array detection simulation test block which comprises a main tube and a branch tube, wherein the branch tube is welded and fixed on the side wall of the main tube, the axes of the main tube and the branch tube are mutually vertical, and the top of the branch tube is detachably provided with a locking mechanism for fixing a phased array detection device. According to the invention, the locking mechanism is detachably arranged on the top of the simulation test block, the phased array detection device can be connected with the simulation test block through the locking mechanism, when the simulation test block is detected, personnel directly install the phased array detection device on the top of the branch pipe through the locking mechanism to detect the manually set defects at the welding seam, and the simulation test block can be used for verifying the coverage condition of ultrasonic phased array detection on the welding joint through manually setting the defects, so that a reasonable ultrasonic phased array detection process is facilitated to be formulated, and the effective detection of the defects in the welding joint is ensured. The reliability of phased array detection is improved, and the safe operation of the boiler is effectively ensured.
Description
Technical Field
The invention belongs to the technical field of weld joint detection, and particularly relates to a power station boiler plug-in type tube seat fillet weld phased array detection simulation test block.
Background
The pipe-pipe fillet weld is a common structure of pressure-bearing equipment of a power station boiler and is also a part with the most problems found in internal inspection of the boiler. Because the thickness difference between the branch pipe and the main pipe is large, the width of a groove of a welding line is in a continuous variation trend in the manufacturing and installing processes, the welding process is complex, welding parameters are various, and the defects that the groove is not fused, the root is not welded completely and the like are easily generated. In addition, the pipe-pipe fillet welds are stressed in a complex manner and are prone to stress concentration, thereby causing fatigue cracks. Therefore, the detection reliability of the pipe-pipe fillet weld is improved, and the method has positive significance for reducing the risk of unplanned shutdown of the boiler and ensuring the power supply safety.
The quality evaluation of pipe-to-pipe fillets is generally carried out by visual inspection and magnetic powder or penetration inspection, i.e., current methods only inspect the surface or near-surface of the fillet, but not the inside of the fillet, effectively. The reliability of the ray detection is greatly influenced by the structure of the fillet weld and is accompanied by radiation hazard, and the method is difficult to implement in the actual detection process. The phased array detection technology can perform electronic scanning and dynamic focusing, has high detection speed, can generate a complete image of an object to be detected by placing a probe at one position, can detect workpieces with complex shapes, and can distinguish real defects from end angle reflections, thereby overcoming many limitations of the conventional ultrasonic method. However, how to mutually match the phased array detection device with the test block to enable the probe on the detection device to successfully complete detection of the simulated defects on the test block, no related scheme is proposed in the prior art.
Disclosure of Invention
The invention aims to provide a power station boiler plug-in tube seat fillet weld phased array detection simulation test block to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a power plant boiler bayonet tube seat fillet weld phased array detects simulation test block, including female pipe and branch pipe, branch pipe welded fastening is on the lateral wall of female pipe, the axis mutually perpendicular of the two, and the detachable locking mechanism who is used for fixed phased array detection device that installs in top of branch pipe.
Preferably, locking mechanism is including the barrel, the top of barrel is formed with the slot that is used for installing phased array detection device, the disc is installed in the inside rotation of barrel, the peripheral annular evenly distributed of disc has three annular arch, annular evenly distributed has three articulated seat on the outer wall of barrel, the inboard of every articulated seat all articulates there is the locking piece, the top of locking piece inclines and is the arc structure to the center of barrel, be connected with the spring between the inboard top of locking piece and the barrel outer wall, annular distribution has three extrusion post on the outer wall of barrel, the one end of every extrusion post all runs through the barrel after extend to inside and with the protruding sliding connection of arc, the other end and the inboard bottom cooperation of locking piece of every extrusion post are connected.
Preferably, one end of the arc-shaped bulge, which is far away from the disc, is provided with a limiting clamping groove, and the shape of the limiting clamping groove is matched with the end part of the extrusion column.
Preferably, the bottom of the inner side of the cylinder body is of a sealing structure and is connected with a fixing plate, a servo motor is fixedly mounted at the top of the fixing plate, and the output end of the servo motor is connected with the disc in a driving mode.
Preferably, the position department annular that is close to its bottom on the lateral wall of barrel distributes and has three spacing inserted block to every spacing inserted block all with the outer wall fixed connection of barrel, the position department that the opening part at branch pipe top corresponds every spacing inserted block has seted up spacing mounting groove along vertical direction, and the barrel passes through inside spacing inserted block sliding insertion to the branch pipe.
Preferably, the support plates are welded to both ends of the main pipe.
Preferably, a welding seam is formed at the joint of the main pipe and the branch pipe, a simulated positioning air hole is formed in the surface of the joint of the main pipe and the welding seam, a simulated incomplete fusion defect is arranged at the joint of the branch pipe and the welding seam, and a simulated incomplete penetration defect is arranged at the bottom end of the welding seam.
Compared with the prior art, the invention provides a power station boiler plug-in tube seat fillet weld phased array detection simulation test block, which has the following beneficial effects:
(1) According to the invention, the locking mechanism is detachably arranged on the top of the simulation test block, the phased array detection device can be connected with the simulation test block through the locking mechanism, when the simulation test block is detected, personnel directly install the phased array detection device on the top of the branch pipe through the locking mechanism to detect the manually set defects at the welding seam, and the simulation test block can be used for verifying the coverage condition of ultrasonic phased array detection on the welding joint through manually setting the defects, so that a reasonable ultrasonic phased array detection process is facilitated to be formulated, and the effective detection of the defects in the welding joint is ensured. The reliability of phased array detection is improved, and the safe operation of the boiler is effectively guaranteed.
(2) The locking mechanism is convenient and flexible to use, can be applied to a branch pipe of a simulation test block and an entity connecting pipe, and only needs to be provided with a corresponding limiting mounting groove, the phased array detection device can establish a good connection relation with the entity connecting pipe through the locking mechanism, so that smooth detection of the entity connecting pipe is guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic structural diagram of an entire module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an assembly of a phased array inspection apparatus and modules according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a locking mechanism in an embodiment of the present invention;
FIG. 4 is a schematic top view of a locking mechanism in an embodiment of the present invention;
FIG. 5 is a schematic view showing the internal structure of the locking mechanism in the embodiment of the present invention;
FIG. 6 is a schematic sectional view of the junction of the trunk and the branch pipes.
In the figure: 1. a main pipe; 2. a support plate; 3. a branch pipe; 4. a limiting mounting groove; 5. a locking mechanism; 6. a barrel; 7. limiting the inserting block; 8. a hinged seat; 9. a locking block; 10. a spring; 11. a slot; 12. extruding the column; 13. a disc; 14. an arc-shaped bulge; 15. a limiting clamping groove; 16. a fixing plate; 17. a servo motor; 18. scanning the rack; 19. connecting the hanger rod; 20. an electric telescopic rod; 21. detecting a probe; 22. a slider; 23. a chute; 24. welding seams; 25. simulating a positioning air hole; 26. simulating unfused defects; 27. simulating the lack of penetration defect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
As shown in FIGS. 1-6, this embodiment provides a power plant boiler plug-in tube socket fillet weld phased array detection simulation test block, including female pipe 1 and branch pipe 3, branch pipe 3 welded fastening is on the lateral wall of female pipe 1, the two axis mutually perpendicular, the detachable locking mechanical system 5 that is used for fixed phased array detection device that installs in the top of branch pipe 3, when adopting phased array detection device to detect the defect on the simulation test block, phased array detection device can directly be installed at branch pipe 3 top, after the detection finishes, dismantle phased array detection device and then detect the entity takeover again.
Phased array detection device then is as shown in fig. 2, it is including fixing the scanning frame 18 on the base, wherein phased array detection device's base links to each other with locking mechanism 5, scan the top of frame 18 and connect jib 19 along horizontal direction fixedly connected with, the both sides of connecting jib 19 are formed with spout 23 along its length direction, sliding connection has slider 22 in spout 23, slider 22's bottom fixedly connected with electric telescopic handle 20, electric telescopic handle 20's expansion end is then fixedly connected with test probe 21, and test probe 21 sets up towards the junction slope of female pipe 1 and branch pipe 3, adjust the distance between test probe 21 and branch pipe 3 through slider 22 at the inside slip of spout 23, adjust the distance between test probe 21 and the female pipe 1 through electric telescopic handle 20's flexible.
Specifically, the locking mechanism 5 in this embodiment is as shown in fig. 3, and includes a cylinder 6, a slot 11 for mounting a phased array detection device is formed at the top of the cylinder 6, a disk 13 is rotatably mounted inside the cylinder 6, three annular protrusions 14 are uniformly distributed on the periphery of the disk 13, three hinge seats 8 are uniformly distributed on the outer wall of the cylinder 6 in an annular manner, a lock block 9 is hinged on the inner side of each hinge seat 8, the top of the lock block 9 is inclined toward the center of the cylinder 6 and has an arc-shaped structure, a spring 10 is connected between the top of the inner side of the lock block 9 and the outer wall of the cylinder 6, three squeeze posts 12 are distributed on the outer wall of the cylinder 6 in an annular manner, one end of each squeeze post 12 extends into the cylinder 6 after penetrating through the cylinder and is slidably connected with the arc-shaped protrusion 14, and the other end of each squeeze post 12 is connected with the bottom of the inner side of the lock block 9 in a matching manner, when the locking mechanism 5 acts, firstly, the disc 13 is rotated anticlockwise, the three arc-shaped protrusions 14 and the disc 13 rotate synchronously to drive the extrusion column 12 to move outwards along the radial direction of the disc 13, the extrusion column 12 moves outwards to apply thrust to the bottom of the locking block 9, so that the locking block 9 rotates anticlockwise by taking the hinge base 8 as a center, the top of the locking block 9 rotates towards the central axis direction of the cylinder 6 and is attached to the surface of the base of the phased array detection device, the three locking blocks 9 are matched to clamp the base of the phased array detection device in the slot 11, the locking block 9 compresses the spring 10 in the anticlockwise rotating process, the spring 10 stores potential energy, after the phased array detection device is separated from the slot 11 and the disc 13 rotates reversely to return to the initial position, and the locking block 9 returns to the initial position under the action of the spring 10.
In order to prevent that disc 13 is too big because of the rotation angle in the anticlockwise rotation's in-process, cause extrusion column 12 and arc arch 14 to break away from, be formed with spacing draw-in groove 15 in the one end that disc 13 is kept away from to arc arch 14 in this embodiment, the shape of spacing draw-in groove 15 and the tip looks adaptation of extrusion column 12, when disc 13 anticlockwise rotation to the position of spacing draw-in groove 15, extrusion column 12 imbeds in spacing draw-in groove 15, can form spacingly to extrusion column 12, extrusion column 12 moves to extreme position along disc 13's radial outside this moment, it should be said that, when disc 13 clockwise rotates, extrusion column 12 can follow the smooth break away from in spacing draw-in groove 15.
The bottom of the inner side of the cylinder 6 is of a sealing structure and is connected with a fixing plate 16, a servo motor 17 is fixedly mounted at the top of the fixing plate 16, the output end of the servo motor 17 is in driving connection with the disc 13, and the disc 13 is driven to rotate through the servo motor 17.
In addition, in order to make installation that locking device 5 can be better at branch pipe 3 top, the position department annular distribution that this embodiment is close to its bottom on the lateral wall of barrel 6 has three spacing inserted block 7 to every spacing inserted block 7 all with the outer wall fixed connection of barrel 6, spacing mounting groove 4 has been seted up along vertical direction in the position department that the opening part at branch pipe 3 top corresponds every spacing inserted block 7, inside barrel 6 passed through spacing inserted block 7 sliding insertion to branch pipe 3. Because the whole cylindric structure that is of mother board 1, consequently, in order to make phased array detection device install can be stable after on branch pipe 3 detect the simulation defect to on the test block, have backup pad 2 in the both ends welding of mother pipe 1 in this embodiment, backup pad 2 is whole to be the triangle-shaped structure, can whole simulation test block of stable support and phased array detection device.
As shown in fig. 6, in the present embodiment, a weld 24 is formed at the joint of the parent pipe 1 and the branch pipe 3, a simulated positioning air hole 25 is opened on the surface of the joint of the parent pipe 1 and the weld 24, a simulated non-fusion defect 26 is provided at the joint of the branch pipe 3 and the weld 24, and a simulated non-penetration defect 27 is provided at the bottom end of the weld 24.
The invention provides a phased array detection simulation test block for an inserted pipe seat fillet weld of a power station boiler, when the phased array detection simulation test block is used and an ultrasonic phased array is applied to carry out simulation detection, the simulation test block is manufactured according to the specification of a locking mechanism 5, a limiting installation groove 4 is formed in the top of a branch pipe 3 in the simulation test block, then the locking mechanism 5 is inserted into the branch pipe 3, a phased array detection device is inserted into an insertion groove 11 of the locking mechanism 5, a personal clothing motor 17 is started to drive a disc 13 to rotate, three arc-shaped protrusions 14 and the disc 13 rotate synchronously to drive an extrusion column 12 to move outwards along the radial direction of the disc 13, the extrusion column 12 moves outwards to apply thrust to the bottom of a lock block 9, so that the lock block 9 rotates anticlockwise around a hinge seat 8, the top of the lock block 9 rotates towards the central axis direction of a cylinder 6 and is attached to the bottom of the phased array detection device, and the three lock blocks 9 are matched to clamp the phased array detection device in the insertion groove 11. Then the sliding block 22 is controlled to slide in the sliding groove 23, the electric telescopic rod 20 extends out to drive the detection probe 21 to move downwards to the position near the welding seam 24, the scanning frame 18 is connected with the base in a rotating mode, the scanning frame 18 is started to rotate, the detection probe 21 is driven to rotate around the welding seam 24, after the probe 21 to be detected rotates around the welding seam 24 for a circle, the phased array imaging graph can see the simulated positioning air hole 25, the simulated non-fusion defect 26 and the simulated non-penetration defect 27, and at the optimal imaging position, the camera on the detection probe 21 shoots and stores the simulated defect and the positioning air hole; and smearing coupling agent on the outer wall of the polished entity connecting pipe, installing a locking mechanism 5 and a phased array detection device on the entity connecting pipe in the same way, completing the detection of the fillet weld of the inserted connecting pipe, and comparing the detection data with the prestored weld defect image so as to judge the detection result. This simulation test block can be used for verifying ultrasonic phased array and detect the cover condition to welded joint through setting up artificial defect, helps formulating reasonable ultrasonic phased array detection technology, guarantees effectively examining of welded joint internal defect. The reliability of phased array detection is improved, and the safe operation of the boiler is effectively ensured.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a bayonet tube socket fillet weld phased array of power plant boiler detects simulation test block, including female pipe (1) and branch pipe (3), branch pipe (3) welded fastening is on the lateral wall of female pipe (1), the axis mutually perpendicular of the two, its characterized in that: the top of the branch pipe (3) is detachably provided with a locking mechanism (5) for fixing the phased array detection device.
2. The power station boiler plug-in tube seat fillet weld phased array detection simulation test block as claimed in claim 1, wherein: locking mechanism (5) are including barrel (6), the top of barrel (6) is formed with slot (11) that are used for installing phased array detection device, disc (13) are installed in the inside rotation of barrel (6), the peripheral annular evenly distributed of disc (13) has three annular arch (14), annular evenly distributed has three articulated seat (8) on the outer wall of barrel (6), the inboard of every articulated seat (8) all articulates there is locking piece (9), the top of locking piece (9) is to the center slope of barrel (6) and be the arc structure, be connected with spring (10) between the top of locking piece (9) inboard and barrel (6) outer wall, the annular distribution has three extrusion post (12) on the outer wall of barrel (6), the one end of every extrusion post (12) all runs through behind barrel (6) extend to inside and with arc arch (14) sliding connection, the other end of every extrusion post (12) is connected with the inboard bottom cooperation of locking piece (9).
3. The power station boiler plug-in tube seat fillet weld phased array detection simulation test block as claimed in claim 2, characterized in that: a limiting clamping groove (15) is formed at one end, far away from the disc (13), of the arc-shaped protrusion (14), and the shape of the limiting clamping groove (15) is matched with the end part of the extrusion column (12).
4. The power station boiler plug-in tube seat fillet weld phased array detection simulation test block as claimed in claim 2, characterized in that: the bottom of the inner side of the cylinder body (6) is of a sealing structure and is connected with a fixing plate (16), a servo motor (17) is fixedly mounted at the top of the fixing plate (16), and the output end of the servo motor (17) is in driving connection with the disc (13).
5. The power station boiler plug-in tube seat fillet weld phased array detection simulation test block as claimed in any one of claims 2 to 4, wherein: position department annular distribution that is close to its bottom on the lateral wall of barrel (6) has three spacing inserted block (7) to every spacing inserted block (7) all with the outer wall fixed connection of barrel (6), spacing mounting groove (4) have been seted up along vertical direction in the position department that the opening part at branch pipe (3) top corresponds every spacing inserted block (7), barrel (6) through spacing inserted block (7) slip insert to branch pipe (3) inside.
6. The phased array test block for detecting fillet welds of tube seats of utility boilers, as claimed in claim 1, is characterized in that the support plates (2) are welded at both ends of the main tube (1).
7. The phased array test block for detecting the fillet weld of the plug-in tube seat of the utility boiler as claimed in claim 5, characterized in that a weld (24) is formed at the joint of the main tube (1) and the branch tube (3), a simulated positioning air hole (25) is formed on the surface of the joint of the main tube (1) and the weld (24), a simulated non-fusion defect (26) is arranged at the joint of the branch tube (3) and the weld (24), and a simulated non-penetration defect (27) is arranged at the bottom end of the weld (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111381922.8A CN115825249A (en) | 2021-11-22 | 2021-11-22 | Plug-in tube seat fillet weld phased array detection simulation test block for power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111381922.8A CN115825249A (en) | 2021-11-22 | 2021-11-22 | Plug-in tube seat fillet weld phased array detection simulation test block for power station boiler |
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| Publication Number | Publication Date |
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| CN115825249A true CN115825249A (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111381922.8A Pending CN115825249A (en) | 2021-11-22 | 2021-11-22 | Plug-in tube seat fillet weld phased array detection simulation test block for power station boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117647582A (en) * | 2023-12-06 | 2024-03-05 | 广州声华科技股份有限公司 | Ultrasonic detection device and method for boiler surface weld joint |
-
2021
- 2021-11-22 CN CN202111381922.8A patent/CN115825249A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117647582A (en) * | 2023-12-06 | 2024-03-05 | 广州声华科技股份有限公司 | Ultrasonic detection device and method for boiler surface weld joint |
| CN117647582B (en) * | 2023-12-06 | 2024-05-17 | 广州声华科技股份有限公司 | Ultrasonic detection device and method for boiler surface weld joint |
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