CN110988120A - Ultrasonic online flaw detection device for weld defects of stainless steel thin-wall round welded pipe - Google Patents
Ultrasonic online flaw detection device for weld defects of stainless steel thin-wall round welded pipe Download PDFInfo
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- CN110988120A CN110988120A CN201911070671.4A CN201911070671A CN110988120A CN 110988120 A CN110988120 A CN 110988120A CN 201911070671 A CN201911070671 A CN 201911070671A CN 110988120 A CN110988120 A CN 110988120A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention relates to an ultrasonic online flaw detection device for weld defects of a stainless steel thin-wall circular welded pipe, which comprises a fixed bottom plate, a pair of double-probe angle deviation mechanisms arranged on the fixed bottom plate in parallel, a double-probe wall thickness detection mechanism and a double-probe roundness detection mechanism arranged between the two double-probe angle deviation mechanisms, a water tank arranged on the fixed bottom plate and an external water tank assembly communicated with the water tank, wherein a welded pipe positioning hole is formed in the water tank, and the water tank is respectively matched with the double-probe angle deviation mechanism, the double-probe wall thickness detection mechanism and the double-probe roundness detection mechanism. Compared with the prior art, the invention can realize the omnibearing on-line detection without dead angles of the austenitic stainless steel welded pipe and has high detection precision.
Description
Technical Field
The invention belongs to the technical field of ultrasonic nondestructive flaw detection of stainless steel welded pipes, and relates to an ultrasonic online flaw detection device for weld defects of a stainless steel thin-wall round welded pipe.
Background
Stainless steel welded pipes are usually formed by welding stainless steel strips after being formed by crimping. With the rapid development of high-quality strip steel continuous rolling production and the progress of welding and inspection technology, the quality of welding seams is continuously improved, the variety and the specification of welded pipes are increasingly increased, the cost is far lower than that of seamless steel pipes, and the seamless steel pipes are replaced in more and more fields since the 20 th century and the 30 th century. However, under the influence of welding equipment, welding materials and welding processes, welding defects such as cracks, air holes, undercut, slag inclusion, incomplete fusion, incomplete penetration and the like easily occur to welding seams, and great potential safety hazards are brought to the final application of welded pipes.
The difference between the welding seam structure of the stainless steel pipe and the base material is relatively large, so that common manufacturers and users are not very sensitive to the difference, and the requirements of the manufacturers on production efficiency, so that sufficient heat preservation time cannot be ensured during solution treatment, the difference between the welding seam and the base material structure cannot be completely eliminated, ultrasonic reflection echoes are generated in a welding seam and base material combination area during ultrasonic detection and are mixed with ultrasonic reflection echoes of real defects, accurate judgment of defect signals is influenced, and the basic reason why off-line ultrasonic flaw detection of the welded pipe is difficult to realize is located.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an ultrasonic online flaw detection device for the weld joint defects of the stainless steel thin-wall circular welded pipe.
The purpose of the invention can be realized by the following technical scheme:
the ultrasonic online flaw detection device comprises a fixed base plate, a pair of double-probe angle deviation mechanisms arranged on the fixed base plate in parallel, a double-probe wall thickness detection mechanism and a double-probe roundness detection mechanism which are arranged between the two double-probe angle deviation mechanisms, a water tank arranged on the fixed base plate and an external water tank assembly communicated with the water tank, wherein a welded pipe positioning hole is formed in the water tank, and the water tank is respectively matched with the double-probe angle deviation mechanisms, the double-probe wall thickness detection mechanism and the double-probe roundness detection mechanism. The rubber ring is arranged in the positioning hole of the welded pipe.
Furthermore, the double-probe angle deviation mechanism comprises a first support arranged on the fixed bottom plate, a horizontal graduated scale support arranged at the top of the first support, a pair of angle scale disc assemblies arranged on the horizontal graduated scale support in parallel and a pair of ultrasonic flaw detection assemblies arranged on the horizontal graduated scale support in parallel and respectively matched with the angle scale disc assemblies on the corresponding side. The horizontal graduated scale bracket is provided with a horizontal graduated scale.
Further, angle chi dish subassembly including setting up the fixed block on horizontal scale support and setting up the angle chi dish on the fixed block, the ultrasonic inspection subassembly include second probe supporting framework, a pair of first probe supporting framework that sets up side by side on second probe supporting framework, set up first probe support on two first probe supporting frameworks and set up the ultrasonic inspection probe in first probe support bottom, second probe supporting framework and first probe supporting framework between be equipped with the switching piece.
Furthermore, a planetary gear train is arranged on the horizontal scale support, and the second probe supporting framework is arranged on the planetary gear train.
As a preferable technical scheme, the second probe supporting framework is fixed on the movable disc through a rotating bolt of a planetary gear train.
Furthermore, a second support is arranged on the fixed bottom plate, a horizontal support is arranged at the top of the second support, a back plate is arranged on the horizontal support, and the double-probe wall thickness detection mechanism and the double-probe roundness detection mechanism are respectively arranged on two sides of the back plate.
Furthermore, the double-probe wall thickness detection mechanism comprises a pair of first screw rod sliding block assemblies which are oppositely arranged on the side face of the back plate, a pair of third probe supporting frameworks which are respectively arranged on the two first screw rod sliding block assemblies, a pair of second probe supports which are respectively arranged on the two third probe supporting frameworks, and a pair of ultrasonic thickness measurement probes which are respectively arranged on the two second probe supports.
Furthermore, the double-probe roundness detection mechanism comprises a pair of mounting plates arranged on the other side face of the back plate in parallel, a pair of second lead screw sliding block assemblies respectively arranged on the two mounting plates, and a fourth probe supporting framework and an upper supporting frame respectively arranged on the two second lead screw sliding block assemblies, wherein third probe supports are respectively arranged on the fourth probe supporting framework and the upper supporting frame, and ultrasonic roundness probes are respectively arranged on the two third probe supports.
Furthermore, the first screw rod sliding block assembly and the second screw rod sliding block assembly respectively comprise a first end seat and a second end seat which are arranged in parallel, a screw rod and a polished rod which are arranged between the first end seat and the second end seat in parallel, a movable nut platform which is arranged on the screw rod and is connected with the polished rod in a sliding mode, and a screw button which is arranged on one side of the second end seat and is connected with the screw rod in a transmission mode.
Furthermore, a pair of partition plates are arranged in the water tank, welded pipe positioning holes are formed in the partition plates, and a water inlet valve and a water discharge valve are arranged on the water tank. The top of the clapboard is also provided with a gap, which is convenient for water circulation at two sides.
Furthermore, external water tank assembly include open-top's external water tank, set up the case lid at external water receiving tank top and set up the filter screen in external water receiving tank inside, the case lid on be equipped with the handle, the bottom of external water tank be equipped with the welding piece, the bottom of welding piece be equipped with the directive wheel.
Two sides in the water tank are respectively provided with a clapboard, the lower end of the water tank is sealed, and only a round hole is reserved for welding an upper round pipe which is connected with an external water tank. Set up an isolation layer in the middle of external water receiving tank, set up two 100 mesh stainless steel filter screens on isolation layer both sides, let water can pass through, filter the residue, realize the sustainable cyclic utilization to water.
Aiming at the welding defects of the welded pipe, the invention mainly focuses on the weld line, and the detection of the inner wall of the weld joint of the welded pipe is enhanced by arranging the ultrasonic flat probe.
Compared with the prior art, the invention has the following characteristics:
1) according to the invention, the stainless steel angle scale disc can be used for accurately positioning the angle of the ultrasonic flaw detection probe, the horizontal graduated scale on the horizontal graduated scale bracket is used for positioning the horizontal position of the ultrasonic flaw detection probe, and the first probe bracket is used for adjusting the vertical offset of the ultrasonic flaw detection probe, so that the flexible adjustment and accurate positioning of the ultrasonic flaw detection probe are realized.
2) The ultrasonic probe in the invention is a probe which can both transmit and receive, and the eight ultrasonic probes are used for detecting the welding seam of the welded pipe without dead angles, thereby improving the precision of the prior flaw detection.
3) The invention utilizes the screw rod sliding block component to finely adjust the distance between the ultrasonic probe and the welded pipe, thereby further improving the detection flaw detection precision.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of a dual probe angular offset mechanism according to the present invention;
FIG. 3 is a schematic structural view of a horizontal scale support of the present invention;
FIG. 4 is a schematic structural diagram of a dual-probe wall thickness detection mechanism according to the present invention;
FIG. 5 is a schematic structural diagram of a dual-probe roundness detection mechanism according to the present invention;
FIG. 6 is a schematic structural view of a first lead screw slider assembly of the present invention;
FIG. 7 is a schematic structural view of a second lead screw slider assembly according to the present invention;
FIG. 8 is a schematic view of the structure of the water tank of the present invention;
FIG. 9 is a schematic view of the external water tank assembly according to the present invention;
FIG. 10 is a schematic view of the internal structure of the external water tank according to the present invention;
the notation in the figure is:
1-a first support, 2-a horizontal scale support, 3-a first probe supporting framework, 4-a second probe supporting framework, 5-an angle scale disc, 6-a fixed block, 7-a first probe support, 8-a transfer block, 9-an ultrasonic flaw detection probe, 10-a fixed bottom plate, 11-a second support, 12-a third probe supporting framework, 13-a second probe support, 14-a first lead screw slider component, 15-a horizontal support, 16-a back plate, 17-an ultrasonic thickness measurement probe, 18-an upper support frame, 19-a second lead screw slider component, 20-an ultrasonic roundness probe, 21-a fourth probe supporting framework, 22-a water tank, 23-a first end seat, 24-a movable nut platform, 25-a polish rod, 26-a lead screw, 27-a second end seat, 28-a screw knob, 29-an installation plate, 30-an external water tank, 31-a tank cover, 32-a handle, 33-a welding block, 34-a steering wheel, 35-filter screen, 36-welding pipe positioning hole, 37-third probe bracket, 38-clapboard.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
an ultrasonic online flaw detection device for weld defects of stainless steel thin-wall circular welded pipes is disclosed, as shown in figures 1 to 10, a horizontal scale support 2 is fixedly connected through four first supports 1 and is symmetrically distributed on two sides of the device, the first supports 1 and a second support 11 are fixedly connected on a fixed bottom plate through bolts, a water tank 22 is formed by sheet metal seamless welding to ensure the sealing property, two water valves are welded at the bottom to control water to flow in and out, a water pump pumps water from the water outlet side of an external water tank 30 to enter the water tank 22 through a water pipe, then the other water valve drains water to the water receiving side of the external water tank 30 through a water pipe, a rubber ring is added to a welded pipe positioning hole 36 for welded pipe movement to reduce the overflow of water, a partition plate 38 is respectively added on two sides of the water tank 22, only one round hole is sealed at the lower end of the water tank, a round pipe is welded on the water receiving side of the external water tank 30, the water, the fixed bottom plate 10 can be connected with a foot rest or placed on an operation platform; the horizontal graduated scale support 2 is provided with threaded holes which are uniformly distributed, the angle scale disc 5 is indirectly fixed on the horizontal graduated scale support 2 through a fixing block 6 to realize horizontal positioning, the upper and lower parallel first probe supporting frameworks 3 are fixed on the second probe supporting framework 4 through a transfer block 8 to realize supporting and positioning of the first probe support 7, the second probe supporting framework 4 is fixed on a moving disc through a rotating bolt of a planetary gear train to realize adjustment of the angle of the first probe support 7, the ultrasonic flaw detection probe 9 is welded at the tail end of the first probe support 7, the first probe support 7 can realize adjustment of the upper and lower positions on the first probe supporting framework 3, and the positioning of the ultrasonic flaw detection probe 9 is realized through bolt positioning; the horizontal support 15 is connected with the second support 11 through a bolt, the back plate 16 is fixed on the horizontal support 15 through a bolt, the two first lead screw sliding block assemblies 14 are relatively horizontally arranged on one side of the back plate 16, the third probe supporting framework 12 is connected with a movable nut platform 24 on the first lead screw sliding block assemblies 14 through a bolt, the movable nut platform 24 can move left and right on a lead screw 26 along with the movable nut platform 24, the lead screw 26 is connected with a first end seat 23 and a second end seat 27 through a deep groove ball bearing, the lead screw 26 is driven to rotate when a screw knob 28 is screwed, the movable nut platform 24 is connected with the polished rod 25 through surface contact, the rotation of the polished rod 25 is limited, the polished rod 25 can only move left and right or up and down, and the first end seat 23 and the second end seat 27 fix; the third probe bracket 37 is fixed on the third probe supporting framework 12 through bolts, and the ultrasonic thickness measuring probe 17 is welded on the second probe bracket 13; the second screw rod sliding block assembly 19 is fixed on the other side of the back plate 16 through bolts, the upper support frame 18 and the fourth probe support framework 21 are respectively fixed on the two moving nut platforms 24 to realize the up-and-down movement of the upper support frame 18 and the fourth probe support framework 21, the third probe support 37 is fixed on the upper support frame 18 and the fourth probe support framework 21 through bolts, and the ultrasonic roundness probe 20 is welded on the inner side of the third probe support 37; the box cover 31 is connected with the handle 32 through screws, the external water tank 30 and the welding block 33 are welded and fixed at specific positions, the self-locking steering wheel 34 and the welding block 33 are indirectly fixed on the external water tank 30 through bolt connection, the position of the external water tank 30 is moved and fixed, and the high-number filter screen 35 and the external water tank 30 are fixed in the groove through bolt connection.
Calculating the required offset angle and distance of an ultrasonic flaw detection probe 9 by using a matched calculation program according to the specification of an austenitic stainless steel welded pipe to be detected, then adjusting the position of a fixed block 6, the angle of an angle ruler disc 5 and a spiral button 28 to adjust the positions of probes (9, 17 and 20), opening a water inlet valve of a water tank 22, closing a water inlet and outlet valve of an external water tank 30, starting a water pump to start adding water into the water tank 22, and when the water level just exceeds a partition plate 38, incompletely opening a water discharge valve of the water tank 22 to balance the inlet and outlet water, and returning the outlet water to the external water tank 30 through a water pipe to realize recycling; the steel pipe can pass through the rubber ring of the middle welded pipe positioning hole 36 at a constant speed, in enterprise production, a welding line is generally upward, when the welded pipe passes through the ultrasonic flaw detection probe 9, ultrasonic waves emitted by the ultrasonic flaw detection probe 9 are applied to the welded pipe at a certain angle (a first critical angle), refraction is generated on the austenitic stainless steel welded pipe to generate creeping waves, the ultrasonic creeping waves are compressed longitudinal waves with a refraction angle of 90 degrees and are sensitive to surface roughness, the ultrasonic creeping waves are particularly suitable for detecting austenitic coarse-grained materials and weld joint surface and near surface defects, the ultrasonic creeping waves can be reflected in various waveforms after entering the welding line, but the feedback of main longitudinal waves is not influenced, the feedback information can display a result on an online detection system and is monitored by a valve which is set initially, if abnormal detection information exists, an alarm lamp can be automatically triggered, when the welded pipe passes through the ultrasonic thickness measurement probe 17 and the ultrasonic roundness probe 20, ultrasonic vertical welding is emitted, the feedback information is transmitted to an online detection system uninterruptedly, the wall thickness and the roundness are calculated according to the time difference between twice reflection and the ultrasonic velocity, and the omnibearing non-dead-angle online detection of the austenitic stainless steel welded pipe is realized.
Example 2:
the ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe shown in fig. 1 comprises a fixed base plate 10, a pair of double-probe angle deviation mechanisms arranged on the fixed base plate 10 in parallel, a double-probe wall thickness detection mechanism and a double-probe roundness detection mechanism arranged between the two double-probe angle deviation mechanisms, a water tank 22 arranged on the fixed base plate 10 and an external water tank assembly communicated with the water tank 22, wherein a welded pipe positioning hole 36 is formed in the water tank 22, and the water tank 22 is respectively matched with the double-probe angle deviation mechanism, the double-probe wall thickness detection mechanism and the double-probe roundness detection mechanism.
As shown in fig. 2 and 3, the dual-probe angular offset mechanism includes a first support 1 disposed on the fixed base plate 10, a horizontal scale support 2 disposed on the top of the first support 1, a pair of angle scale disc assemblies disposed in parallel on the horizontal scale support 2, and a pair of ultrasonic flaw detection assemblies disposed in parallel on the horizontal scale support 2 and respectively adapted to the angle scale disc assemblies on the corresponding sides. The angle scale disc subassembly is including setting up fixed block 6 on horizontal scale support 2 and the angle scale disc 5 of setting on fixed block 6, the ultrasonic inspection subassembly includes second probe supporting framework 4, a pair of first probe supporting framework 3 that sets up side by side on second probe supporting framework 4, set up first probe support 7 on two first probe supporting framework 3 and set up the ultrasonic inspection probe 9 in first probe support 7 bottom, be equipped with switching piece 8 between second probe supporting framework 4 and the first probe supporting framework 3. The horizontal graduated scale support 2 is provided with a planetary gear train, and the second probe supporting framework 4 is arranged on the planetary gear train.
The fixed base plate 10 is provided with a second support 11, the top of the second support 11 is provided with a horizontal support 15, the horizontal support 15 is provided with an air cylinder back plate 16, and the double-probe wall thickness detection mechanism and the double-probe roundness detection mechanism are respectively arranged on two sides of the air cylinder back plate 16.
As shown in fig. 4, the double-probe wall thickness detection mechanism includes a pair of first lead screw slider assemblies 14 oppositely disposed on the side surfaces of the cylinder back plate 16, a pair of third probe supporting frameworks 12 respectively disposed on the two first lead screw slider assemblies 14, a pair of second probe supports 13 respectively disposed on the two third probe supporting frameworks 12, and a pair of ultrasonic thickness measurement probes 17 respectively disposed on the two second probe supports 13.
As shown in fig. 5, the dual-probe roundness detection mechanism includes a pair of mounting plates 29 arranged in parallel on the other side of the cylinder backplate 16, a pair of second lead screw slider assemblies 19 respectively arranged on the two mounting plates 29, and fourth probe supporting frameworks 21 and upper support frames 18 respectively arranged on the two second lead screw slider assemblies 19, wherein the fourth probe supporting frameworks 21 and the upper support frames 18 are both provided with third probe brackets 37, and the two third probe brackets 37 are both provided with ultrasonic roundness probes 20.
As shown in fig. 6 and 7, each of the first lead screw slider assembly 14 and the second lead screw slider assembly 19 includes a first end seat 23 and a second end seat 27 which are arranged in parallel, a lead screw 26 and a polish rod 25 which are arranged in parallel between the first end seat 23 and the second end seat 27, a moving nut platform 24 which is arranged on the lead screw 26 and is connected with the polish rod 25 in a sliding manner, and a screw button 28 which is arranged on one side of the second end seat 27 and is connected with the lead screw 26 in a transmission manner.
As shown in fig. 8, a pair of partition plates 38 are disposed in the water tank 22, the partition plates 38 are provided with pipe welding positioning holes 36, and the water tank 22 is provided with a water inlet valve and a water outlet valve.
As shown in fig. 9 and 10, the external water tank assembly includes an external water tank 30 with an open top, a tank cover 31 disposed on the top of the external water tank 30, and a filter screen 35 disposed inside the external water tank 30, the tank cover 31 is provided with a handle 32, the bottom of the external water tank 30 is provided with a welding block 33, and the bottom of the welding block 33 is provided with a steering wheel 34.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The utility model provides a stainless steel thin wall circular welded pipe welding seam defect ultrasonic online flaw detection device, its characterized in that, the device include PMKD (10), a pair of two probe angular migration mechanisms that set up side by side on PMKD (10), set up two probe wall thickness detection mechanism and two probe circularity detection mechanism between two probe angular migration mechanisms, set up water tank (22) on PMKD (10) and the external water tank assembly that is linked together with water tank (22), water tank (22) on seted up welded tube locating hole (36), and water tank (22) respectively with two probe angular migration mechanisms, two probe wall thickness detection mechanism and two probe circularity detection mechanism looks adaptations.
2. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 1, wherein the double-probe angle deviation mechanism comprises a first support (1) arranged on the fixed base plate (10), a horizontal scale support (2) arranged at the top of the first support (1), a pair of angle scale disc assemblies arranged on the horizontal scale support (2) in parallel, and a pair of ultrasonic flaw detection assemblies arranged on the horizontal scale support (2) in parallel and respectively matched with the angle scale disc assemblies on the corresponding side.
3. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall round welded pipe according to claim 2, characterized in that the angle scale assembly comprises a fixing block (6) arranged on the horizontal scale support (2) and an angle scale (5) arranged on the fixing block (6), the ultrasonic flaw detection assembly comprises a second probe supporting framework (4), a pair of first probe supporting frameworks (3) arranged on the second probe supporting framework (4) in parallel, first probe supports (7) arranged on the two first probe supporting frameworks (3) and ultrasonic flaw detection probes (9) arranged at the bottom ends of the first probe supports (7), and a transfer block (8) is arranged between the second probe supporting framework (4) and the first probe supporting framework (3).
4. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 3, characterized in that a planetary gear train is arranged on the horizontal scale bracket (2), and the second probe supporting framework (4) is arranged on the planetary gear train.
5. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 1, wherein a second support (11) is arranged on the fixed bottom plate (10), a horizontal support (15) is arranged at the top of the second support (11), a back plate (16) is arranged on the horizontal support (15), and the double-probe wall thickness detection mechanism and the double-probe roundness detection mechanism are respectively arranged on two sides of the back plate (16).
6. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 5, wherein the double-probe wall thickness detection mechanism comprises a pair of first lead screw slider assemblies (14) oppositely arranged on the side surface of the back plate (16), a pair of third probe supporting frameworks (12) respectively arranged on the two first lead screw slider assemblies (14), a pair of second probe supports (13) respectively arranged on the two third probe supporting frameworks (12), and a pair of ultrasonic thickness measurement probes (17) respectively arranged on the two second probe supports (13).
7. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 6, wherein the double-probe roundness detection mechanism comprises a pair of mounting plates (29) arranged on the other side of the back plate (16) in parallel, a pair of second lead screw slider assemblies (19) arranged on the two mounting plates (29) respectively, and fourth probe supporting frameworks (21) and an upper support frame (18) arranged on the two second lead screw slider assemblies (19) respectively, wherein the fourth probe supporting frameworks (21) and the upper support frame (18) are provided with third probe supports (37), and the two third probe supports (37) are provided with ultrasonic roundness probes (20).
8. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 7, wherein each of the first lead screw slider assembly (14) and the second lead screw slider assembly (19) comprises a first end seat (23) and a second end seat (27) which are arranged side by side, a lead screw (26) and a polished rod (25) which are arranged side by side between the first end seat (23) and the second end seat (27), a movable nut platform (24) which is arranged on the lead screw (26) and is in sliding connection with the polished rod (25), and a screw button (28) which is arranged on one side of the second end seat (27) and is in transmission connection with the lead screw (26).
9. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 1, characterized in that a pair of partition plates (38) are arranged in the water tank (22), the partition plates (38) are provided with weld pipe positioning holes (36), and the water tank (22) is provided with a water inlet valve and a water outlet valve.
10. The ultrasonic online flaw detection device for the weld defects of the stainless steel thin-wall circular welded pipe according to claim 1, wherein the external water tank assembly comprises an external water tank (30) with an open top, a tank cover (31) arranged at the top of the external water tank (30) and a filter screen (35) arranged inside the external water tank (30), a handle (32) is arranged on the tank cover (31), a welding block (33) is arranged at the bottom of the external water tank (30), and a steering wheel (34) is arranged at the bottom of the welding block (33).
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| CN201911070671.4A CN110988120A (en) | 2019-11-05 | 2019-11-05 | Ultrasonic online flaw detection device for weld defects of stainless steel thin-wall round welded pipe |
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| CN201911070671.4A CN110988120A (en) | 2019-11-05 | 2019-11-05 | Ultrasonic online flaw detection device for weld defects of stainless steel thin-wall round welded pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607810A (en) * | 2021-07-02 | 2021-11-05 | 上海应用技术大学 | Online ultrasonic flaw detection device for defects of thin-wall metal straight-seam circular welded pipe |
| CN113655116A (en) * | 2020-05-12 | 2021-11-16 | 中车唐山机车车辆有限公司 | Auxiliary device for ultrasonic flaw detection and judgment method |
| CN115880280A (en) * | 2023-02-01 | 2023-03-31 | 山东建筑大学鉴定检测中心有限公司 | Detection method for quality of steel structure weld joint |
| CN116413336A (en) * | 2023-06-12 | 2023-07-11 | 天津市宝来工贸有限公司 | End weld joint detection device and detection method for use of welded pipe |
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| CN113607810A (en) * | 2021-07-02 | 2021-11-05 | 上海应用技术大学 | Online ultrasonic flaw detection device for defects of thin-wall metal straight-seam circular welded pipe |
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| CN115880280B (en) * | 2023-02-01 | 2023-05-09 | 山东建筑大学鉴定检测中心有限公司 | Method for detecting quality of welding seam of steel structure |
| CN116413336A (en) * | 2023-06-12 | 2023-07-11 | 天津市宝来工贸有限公司 | End weld joint detection device and detection method for use of welded pipe |
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