CN213275455U - Phased array ultrasonic detection device for small-diameter pipe welding seam - Google Patents
Phased array ultrasonic detection device for small-diameter pipe welding seam Download PDFInfo
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- CN213275455U CN213275455U CN202022425479.7U CN202022425479U CN213275455U CN 213275455 U CN213275455 U CN 213275455U CN 202022425479 U CN202022425479 U CN 202022425479U CN 213275455 U CN213275455 U CN 213275455U
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Abstract
The utility model discloses a phased array ultrasonic testing device for small-bore pipe welding seam belongs to small-bore pipeline nondestructive test technical field. The fixed ring rail is of a two-piece split structure, a compensation block is arranged in a circumferential sliding groove on the inner side of the fixed ring rail, and the movable scanning sliding block is arranged on the fixed ring rail in a sliding manner; the movable scanning slide block is connected with a size measuring assembly, a probe mounting assembly and a roller encoder; the probe mounting assembly comprises a connecting part and a fixing part, the connecting part is connected with the movable scanning slide block, the fixing part is connected with the probe clamping device, the probe clamping device is connected with the phased array ultrasonic probe, and the connecting part and the fixing part are connected through a joint mechanism; the roller of the roller encoder is contacted with the outer side of the fixed ring rail; the phased array ultrasonic probe and the roller encoder are respectively connected to the phased array ultrasonic detector through connecting wires. The device has reasonable structural design, and can quickly, accurately and stably complete the phased array ultrasonic detection of the butt welding seam of the small-diameter pipe made of various materials and pipe diameters.
Description
Technical Field
The utility model belongs to the technical field of small-bore pipeline nondestructive test, concretely relates to phased array ultrasonic testing device for small-bore pipe welding seam.
Background
The diameter of a heating surface pipe of a thermal power plant is generally 32-89 mm, the wall thickness is 4-12 mm, the heating surface pipe and the heating surface pipe are small-diameter pipes and are connected in a welding mode, the heating surface pipe is operated at a high temperature and high pressure state for a long time, the service environment is extremely severe, and the heating surface pipe burst accident caused by weld defects is frequent. GB/T16507.6-2013 Water tube boiler part 6: inspection, test and acceptance provisions: a pipe (pipe panel) of a girth welded joint with p being more than or equal to 9.8MPa is subjected to 100% RT (ray detection) or 100% UT (ultrasonic detection) (50% of an installation site), however, the ultrasonic detection has the problems of low defect detection rate, incapability of retaining a detection result, high requirement on personnel skills, low detection efficiency and the like, and the ray detection has the problems of incapability of cross operation, low defect detection rate, film washing, incapability of quickly reacting the detection result, low detection efficiency, environmental pollution and the like.
The phased array ultrasonic detection technology is used as an extension technology of ultrasonic detection, has flexible sound beam control capability and a quick imaging function, can meet the requirements of high sensitivity, multiple angles, large range, cross operation, quick imaging and convenient automatic detection, and obtains quick development and application. At present, DL/T1718 and 2017, technical specification of phased array ultrasonic detection of welding joints of thermal power plants, stipulate: the scanning mode of phased array ultrasonic detection of the butt weld of the small-diameter pipe is preferably linear scanning, before detection, a reference line is drawn on a scanning surface at a certain distance from the central line of the weld, the distance of the reference line is determined according to the setting of a detection process, and the error of the distance is +/-1 mm. However, the linear scanning field application is mainly realized by the following two methods: one method is that a handheld phased array ultrasonic probe moves along a reference line, or a magnetic strip with certain length, width and thickness is adopted, the magnetic strip is adsorbed on the outer wall of a ferromagnetic pipe by a circle, the edge of the magnetic strip is used as the reference line, and the linear scanning of phased array ultrasonic detection is realized by adopting a mode that the handheld phased array ultrasonic probe moves along the edge of the magnetic strip; the other method is to adopt a chain type roller sliding scanning device, assemble chains with different diameters according to different pipe diameters, tightly lock and attach the chains to the outer wall of the pipe along a reference line, and realize linear scanning of phased array ultrasonic detection by rotating the chain type roller sliding scanning device by hands. Due to the poor detection environment of the heating surface of the power plant boiler, the defects of frame erection, high-altitude operation, limited space and the like exist, and the linear scanning method have certain defects in field application. If the magnetic stripe and the chain type roller sliding scanning device are required to carry a ruler to measure the distance of the reference line, the magnetic stripe and the chain type roller sliding scanning device are difficult to fix at the position of the reference line under the condition that the detection space is limited, and if the distance error does not meet the requirement, the magnetic stripe and the chain type roller sliding scanning device need to be repeatedly measured, assembled and disassembled to reach the error allowable range, and the operation is complex; magnetic stripe type linear scanning cannot accurately measure scanning distance, and C-scanning imaging detection defect positioning errors are large; the handheld probe cannot ensure the stability of detection in a scanning mode along a reference line, and even cannot finish phased array ultrasonic C-scan imaging detection of the butt weld of the small-diameter pipe at a limited detection space; to the great pipe of diameter, magnetic stripe and chain gyro wheel slip scan the magnetic stripe or the chain of device longer, easily cause the circumference front and back position of magnetic stripe or chain and reference line distance deviation to differ, are not conform to the standard requirement, influence phased array ultrasonic testing result, and the linear of the unable non-ferromagnetic material pipe of realization of magnetic stripe formula is scanned, and the chain is connected with the mode of hanging the knot, and spare part is more, easily relaxes in the field usage process and drops, and the price is expensive.
Disclosure of Invention
In order to solve the defect that exists among the above-mentioned prior art, the utility model aims to provide a phased array ultrasonic testing device for path pipe welding seam, the phased array ultrasonic testing of path pipe butt weld that can be quick, accurate, stable completion various materials, pipe diameter.
The utility model discloses a following technical scheme realizes:
the utility model discloses a phased array ultrasonic detection device for small-diameter pipe welding seams, which comprises a fixed ring rail and a movable scanning slide block; the fixed ring rail is of a two-piece split structure, a sliding groove is formed in the inner side of the fixed ring rail in the circumferential direction, a plurality of compensation blocks are arranged in the sliding groove, and the curvature of the inner side of each compensation block is matched with the pipe diameter of the small-diameter pipe to be measured; the movable scanning slide block is arranged on the fixed ring rail in a sliding manner;
the movable scanning slide block is connected with a size measuring assembly, a probe mounting assembly and a roller encoder; the size measuring assembly and the probe mounting assembly are adjustable in axial position of the shaft of the small diameter pipe to be measured; the probe mounting assembly comprises a connecting part and a fixing part, the connecting part is connected with the movable scanning slide block, the fixing part is connected with the probe clamping device, the probe clamping device is connected with the phased array ultrasonic probe, and the connecting part and the fixing part are connected through a joint mechanism; the size measuring assembly is used for measuring the distance between the front end of the phased array ultrasonic probe and a welding line, and a roller of the roller encoder is in contact with the outer side of the fixed ring rail; the phased array ultrasonic probe and the roller encoder are respectively connected to the phased array ultrasonic detector through connecting wires.
Preferably, a horizontal connecting plate is arranged on the outer side of the movable scanning sliding block, and 2 connecting screw holes are arranged on the horizontal connecting plate side by side; the upper part of the connecting part of the size measuring component and the probe mounting component is a screw matched with the connecting screw hole, and the lower part of the size measuring component is a measuring device.
Further preferably, the measuring device at the lower part of the size measuring assembly is of a telescopic construction.
Further preferably, the screw pitch of the screw on the upper part of the connecting part of the size measuring assembly and the probe mounting assembly is 0.5-1 mm.
Preferably, the upper surface of the fixed ring rail inclines downwards, the lower surface of the fixed ring rail inclines upwards, and the accommodating cavity of the movable scanning slide block is matched with the shape of the fixed ring rail.
Further preferably, the inclination angles of the upper surface and the lower surface of the stationary ring rail are equal and are 30 ° to 60 °.
Preferably, the articulation mechanism is a torsion spring device.
Preferably, the two halves of the stationary ring rail are hinged at the junction on one side and connected by a catch on the other side.
Preferably, the compensation blocks are uniformly distributed on the periphery of the fixed ring rail, and the number of the compensation blocks is 2-4.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a phased array ultrasonic testing device for path pipe welding seam, fixed ring rail adopt two lamella to open structure to realize fixedly through a plurality of compensating blocks in the inboard spout and the path pipe outer wall that awaits measuring, the distance of fixed ring rail side looks butt weld center is unanimous all the time, thereby can ensure that the distance between probe front end and the welding seam center is the fixed value, and the position does not have the deviation around the week, guarantees measurement accuracy, and the installation, dismantles portably. The compensation block is fixed with the small-diameter pipe to be detected, when the small-diameter pipe with different pipe diameters is detected, only the compensation block with different specifications needs to be replaced, the fixed ring rail with various specifications does not need to be manufactured, and the cost is saved. The device is from taking size measurement subassembly, need not to carry the chi utensil in abominable detecting environment, and the measuring weld center that can convenient and fast to probe the front end apart from avoids dropping danger because of the high altitude that uses repeatedly and appear, improves operating efficiency simultaneously. The probe mounting assembly is adjustable in the axial position of the shaft of the small-diameter pipe to be detected, the problem of repeated measurement and loading and unloading of the magnetic strip type and chain type roller sliding scanning device due to inconsistent mounting distance errors can be solved, and the detection efficiency is improved. Through roller encoder slip in the stationary ring rail outside, compare more smooth and easy with the tradition at the gliding mode of path pipe outer wall that awaits measuring, can improve defect detection's positioning accuracy. The device simple structure need not to carry out loaded down with trivial details installation and dismantlement at the operation scene, has improved the accuracy nature and the stability that detect when simplifying the operation flow.
Furthermore, the upper parts of the size measuring assembly and the probe mounting assembly are connected with a connecting screw hole on a horizontal connecting plate of the movable scanning slide block through a screw rod, so that the adjustment is convenient; and 2 connect the screw and set up side by side, can improve the accuracy of the distance between phased array ultrasonic probe front end and the butt weld center.
Furthermore, the measuring device at the lower part of the size measuring component is of a telescopic structure, so that the distance measurement between the phased array ultrasonic detection probe and the reference line can be realized quickly and accurately.
Furthermore, the screw pitch of the screw rod on the upper part of the connecting part of the size measuring assembly and the probe mounting assembly is 0.5-1 mm, so that the distance error between the front end of the probe and the center of the welding seam can be ensured to be less than or equal to 1mm, the accuracy of the detection result is improved, and the overhigh manufacturing cost is avoided.
Further, the upper surface of fixed ring rail slopes down, and the lower surface is upwards inclined, and the shape that holds chamber and fixed ring rail that removes the scanning slider matches, and the installation is dismantled conveniently, and it is smooth and easy to slide.
Furthermore, the inclination angles of the upper surface and the lower surface of the fixed ring rail are equal and are 30-60 degrees, so that the fixed ring rail can smoothly slide and play a good limiting and stabilizing role, the arrangement of a limiting and fixing component is omitted, and the structure is simplified.
Furthermore, the joint mechanism adopts a torsion spring device, on one hand, the elastic force of the spring can enable the probe to be in close contact with the pipe wall, and on the other hand, the actual curvature of the pipe wall is not continuous and uniform in the circumferential direction, the spring can provide certain elastic buffering, so that the movable scanning slide block can stably and smoothly continuously slide.
Furthermore, the compensation blocks are uniformly distributed on the periphery of the fixed ring rail, so that force can be uniformly applied on the periphery, and the device is firm and reliable; the number of the devices is 2-4, and the devices have reliability and economy.
Drawings
Fig. 1 is the utility model discloses a phased array ultrasonic testing device's for path pipe welding seam overall structure schematic diagram.
In the figure: the method comprises the following steps of 1-fixing a ring rail, 2-moving a scanning slide block, 3-dimension measuring component, 4-probe mounting component, 5-joint mechanism, 6-probe clamping device, 7-phased array ultrasonic probe, 8-roller encoder, 9-connecting wire, 10-phased array ultrasonic detector, 11-welding seam and 12-small-diameter pipe to be detected.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific examples, which are intended to illustrate and not to limit the invention:
as shown in fig. 1, the phased array ultrasonic testing device for the small-diameter pipe weld of the present invention comprises a fixed ring rail 1 and a movable scanning slide block 2; the fixed ring rail 1 is of a two-piece split structure, a sliding groove is formed in the inner side of the fixed ring rail 1 in the circumferential direction, a plurality of compensation blocks are arranged in the sliding groove and can be connected with connecting holes in the bottom of the sliding groove through fasteners, and the curvature of the inner side of each compensation block is matched with the pipe diameter of the small-diameter pipe 12 to be measured; the movable scanning slide block 2 is arranged on the fixed circular rail 1 in a sliding manner;
the movable scanning slide block 2 is connected with a size measuring component 3, a probe mounting component 4 and a roller encoder 8; the size measuring component 3 and the probe mounting component 4 are adjustable in position in the axial direction of the small-diameter pipe 12 to be measured; the probe mounting assembly 4 comprises a connecting part and a fixing part, the connecting part is connected with the movable scanning slide block 2, the fixing part is connected with the probe clamping device 6, the probe clamping device 6 is connected with the phased array ultrasonic probe 7, and the connecting part and the fixing part are connected through a joint mechanism 5; the size measuring component 3 is used for measuring the distance between the front end of the phased array ultrasonic probe 7 and the welding line 11, and a roller of the roller encoder 8 is in contact with the outer side of the fixed ring rail 1; the phased array ultrasonic probe 7 and the roller encoder 8 are respectively connected to a phased array ultrasonic detector 10 through connecting wires 9.
In a preferred embodiment of the utility model, a horizontal connecting plate is arranged outside the movable scanning slide block 2, and 2 connecting screw holes are arranged on the horizontal connecting plate side by side; the upper part of the connecting part of the size measuring component 3 and the probe mounting component 4 is a screw matched with the connecting screw hole, and the lower part of the size measuring component 3 is a telescopic columnar measuring device. The screw pitch of the upper screw rod of the connecting part of the size measuring component 3 and the probe mounting component 4 is generally set to be 0.5-1 mm, preferably 1mm, and the screw thread rotates for one turn to be 1mm, so that the error of the distance between the front end of the phased array ultrasonic probe 7 and the center of the welding line 11 can be ensured to be less than or equal to 1 mm.
In other embodiments of the present invention, the movement and fixation of the size measuring unit 3 and the probe mounting unit 4 can be realized by a structure of a sleeve and a screw to be screwed.
In a preferred embodiment of the present invention, the upper surface of the fixed ring rail 1 is inclined downward, the lower surface is inclined upward, and the accommodating cavity of the mobile scanning slider 2 matches with the shape of the fixed ring rail 1. Preferably, the inclination angles of the upper and lower surfaces of the stationary ring rail 1 are equal, generally set to 30 ° to 60 °, preferably 45 °.
In a preferred embodiment of the present invention, the joint mechanism 5 employs a torsion spring device, which can have both elasticity and cushioning property. When the outer curvature of the pipe wall is uniform, the angle adjustment and fixation can be realized by adopting a lockable hinged structure.
In a preferred embodiment of the present invention, the two segments of the stationary circular rail 1 are hinged at the joint of one side and connected at the other side by a hanging buckle, which facilitates the installation and disassembly. Or both sides can be connected by fasteners.
The utility model discloses a preferred embodiment, the compensation piece is at fixed ring rail 1 equipartition upwards week, and quantity is 2 ~ 4 generally.
The working method of the phased array ultrasonic detection device for the small-diameter pipe weld joint comprises the following steps:
selecting matched compensation blocks according to the pipe diameter of the small-diameter pipe 12 to be detected, loading the compensation blocks into a sliding chute, adjusting the positions of the compensation blocks, fixing, installing a fixed ring rail 1 on the outer wall of one side of a butt welding seam 11 of the small-diameter pipe 12 to be detected, and adjusting a joint mechanism 5 to enable a phased array ultrasonic probe 7 at the end of a fixing part to be tightly attached to the outer wall of the small-diameter pipe 12 to be detected; adjusting the size measuring component 3, measuring the distance between the center of the butt weld 11 and the front end of the phased array ultrasonic probe 7, and adjusting the distance between the front end of the phased array ultrasonic probe 7 and the center of the butt weld 11 through the connecting part of the probe mounting component 4 according to the phased array ultrasonic detection process parameters; the stepping distance of the roller encoder 8 is set according to the pipe diameter of the small-diameter pipe 12 to be detected, and the phased array ultrasonic detection of the butt weld of the small-diameter pipe is realized by moving the scanning slide block 2 to rotate circumferentially on the fixed ring rail 1. Then, the phased array ultrasonic C scanning imaging detection of the small-diameter pipe butt weld is completed by operating the phased array ultrasonic detector 10.
It should be noted that the above description is only a part of the embodiments of the present invention, and equivalent changes made by the system described in the present invention are all included in the protection scope of the present invention. The technical field of the present invention can be replaced by other embodiments described in a similar manner, without departing from the structure of the present invention or exceeding the scope defined by the claims, which belong to the protection scope of the present invention.
Claims (9)
1. A phased array ultrasonic detection device for a small-diameter pipe weld joint is characterized by comprising a fixed ring rail (1) and a movable scanning slide block (2); the fixed ring rail (1) is of a two-piece split structure, a sliding groove is formed in the inner side of the fixed ring rail (1) in the circumferential direction, a plurality of compensation blocks are arranged in the sliding groove, and the curvature of the inner side of each compensation block is matched with the pipe diameter of the small-diameter pipe (12) to be detected; the movable scanning slide block (2) is arranged on the fixed circular rail (1) in a sliding manner;
the movable scanning slide block (2) is connected with a size measuring component (3), a probe mounting component (4) and a roller encoder (8); the size measuring component (3) and the probe mounting component (4) are adjustable in position in the axial direction of the small-diameter pipe (12) to be measured; the probe mounting assembly (4) comprises a connecting part and a fixing part, the connecting part is connected with the movable scanning slide block (2), the fixing part is connected with the probe clamping device (6), the probe clamping device (6) is connected with the phased array ultrasonic probe (7), and the connecting part and the fixing part are connected through a joint mechanism (5); the size measuring component (3) is used for measuring the distance between the front end of the phased array ultrasonic probe (7) and the welding line (11), and a roller of the roller encoder (8) is in contact with the outer side of the fixed ring rail (1); the phased array ultrasonic probe (7) and the roller encoder (8) are respectively connected to the phased array ultrasonic detector (10) through a connecting wire (9).
2. The phased array ultrasonic detection device for the small-diameter pipe weld joint according to claim 1, characterized in that a horizontal connecting plate is arranged on the outer side of the movable scanning slide block (2), and 2 connecting screw holes are arranged on the horizontal connecting plate side by side; the upper part of the connecting part of the size measuring component (3) and the probe mounting component (4) is a screw rod matched with the connecting screw hole, and the lower part of the size measuring component (3) is a measuring device.
3. The phased array ultrasonic testing device for small-diameter pipe welding seams according to claim 2, characterized in that the measuring device at the lower part of the size measuring assembly (3) is a telescopic structure.
4. The phased array ultrasonic testing device for the small-diameter pipe welding seam according to claim 2, characterized in that the screw pitch of the screw at the upper part of the connecting part of the size measuring assembly (3) and the probe mounting assembly (4) is 0.5-1 mm.
5. The phased array ultrasonic testing device for the small-diameter pipe welding seam according to claim 1, characterized in that the upper surface of the fixed ring rail (1) is inclined downwards, the lower surface is inclined upwards, and the containing cavity of the movable scanning slide block (2) is matched with the shape of the fixed ring rail (1).
6. The phased array ultrasonic testing device for the small-diameter pipe welding seam according to claim 5, characterized in that the inclination angles of the upper surface and the lower surface of the fixed ring rail (1) are equal and are 30-60 degrees.
7. The phased array ultrasonic testing device for small-diameter pipe welds according to claim 1, characterized in that the articulation mechanism (5) is a torsion spring device.
8. The phased array ultrasonic testing device for the small-diameter pipe welding seam according to claim 1, characterized in that two petals of the fixed ring rail (1) are hinged at a joint at one side and connected at the other side through a hanging buckle.
9. The phased array ultrasonic detection device for the small-diameter pipe weld joint according to claim 1, wherein the compensation blocks are uniformly distributed in the circumferential direction of the fixed ring rail (1), and the number of the compensation blocks is 2-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022425479.7U CN213275455U (en) | 2020-10-27 | 2020-10-27 | Phased array ultrasonic detection device for small-diameter pipe welding seam |
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| CN202022425479.7U CN213275455U (en) | 2020-10-27 | 2020-10-27 | Phased array ultrasonic detection device for small-diameter pipe welding seam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117517455A (en) * | 2023-10-26 | 2024-02-06 | 安徽大华检测技术有限公司 | Bar ultrasonic nondestructive flaw detector |
| CN117517455B (en) * | 2023-10-26 | 2024-05-10 | 安徽大华检测技术有限公司 | Bar ultrasonic nondestructive flaw detector |
-
2020
- 2020-10-27 CN CN202022425479.7U patent/CN213275455U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117517455A (en) * | 2023-10-26 | 2024-02-06 | 安徽大华检测技术有限公司 | Bar ultrasonic nondestructive flaw detector |
| CN117517455B (en) * | 2023-10-26 | 2024-05-10 | 安徽大华检测技术有限公司 | Bar ultrasonic nondestructive flaw detector |
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