阅读说明：本技术 不锈钢管焊缝检测装置 (Stainless steel pipe weld joint detection device ) 是由 不公告发明人 于 2018-12-03 设计创作，主要内容包括：本发明涉及不锈钢管焊缝检测装置,其包括用于支撑设备和提供安装平台的机架,设置在机架上的超声波检测仪和往复横移机构,超声波检测探头设置在往复横移机构上,往复横移机构带动超声波检测探头水平横向往复移动。本发明利用往复横移机构夹持超声波检测探头,使之左右横移实现对检测区域的扫描工作,能够代替技术人员的手工操作,大大降低了劳动强度,并且一个技术人员可以利用多个本发明所提供的装置同时对多条焊缝进行检测,提高了焊缝检测的工作效率,节省人工和时间成本。(The invention relates to a stainless steel pipe weld joint detection device which comprises a rack, an ultrasonic detector and a reciprocating traversing mechanism, wherein the rack is used for supporting equipment and providing an installation platform, the ultrasonic detector and the reciprocating traversing mechanism are arranged on the rack, an ultrasonic detection probe is arranged on the reciprocating traversing mechanism, and the reciprocating traversing mechanism drives the ultrasonic detection probe to horizontally and transversely reciprocate. The ultrasonic detection probe is clamped by the reciprocating transverse moving mechanism, so that the ultrasonic detection probe transversely moves left and right to scan a detection area, the manual operation of technicians can be replaced, the labor intensity is greatly reduced, one technician can detect a plurality of welding lines by using a plurality of devices provided by the invention, the working efficiency of welding line detection is improved, and the labor and time cost are saved.)

1. Nonrust steel pipe welding seam detection device, its characterized in that, it includes:

a frame (1) for supporting equipment and providing a mounting platform;

an ultrasonic detector (27) including a body and an ultrasonic detection probe (16) connected to the body;

the reciprocating transverse moving mechanism is arranged on the rack (1), the ultrasonic detection probe (16) is arranged on the reciprocating transverse moving mechanism, and the reciprocating transverse moving mechanism drives the ultrasonic detection probe (16) to horizontally and transversely reciprocate so as to horizontally move left and right to scan a detection area;

the reciprocating transverse moving mechanism comprises a fixedly arranged shell (10), a transverse moving rack ring (17) and a servo motor (13), the servo motor (13) is fixed on the shell (10), the output shaft of the gear box is fixedly provided with a driving gear (20) meshed with the transverse rack ring (17), the upper side and the lower side of the transverse rack ring (17) are rack structures, the left end and the right end of the transverse rack ring (17) are fixedly provided with a movable arm lever (18), a sliding sleeve (19) is fixedly arranged in the shell (10), the moving arm rod (18) is sleeved in the sliding sleeve (19), the driving gear (20) is an incomplete gear, when the gear rack is meshed with the upper side rack of the transverse rack ring (17), the transverse rack ring (17) moves left, when the ultrasonic detection probe is meshed with a lower rack, the transverse rack ring (17) moves rightwards, and the ultrasonic detection probe (16) is clamped on one of the movable arm rods (18) and moves leftwards and rightwards along with the movable arm rods;

the welding line deviation correcting device comprises a frame (1), a reciprocating transverse moving mechanism, a CCD sensing device and a controller, wherein the transverse adjusting device is arranged on the frame (1), the reciprocating transverse moving mechanism is fixed on the transverse adjusting device, the CCD sensing device is fixed on the reciprocating transverse moving mechanism, and the CCD sensing device is used for identifying a welding line and controlling the transverse adjusting device to correct the deviation through the controller;

the device also comprises a couplant coating mechanism, wherein the couplant coating mechanism comprises a support arm (21) arranged on the rack (1) and a couplant coating head fixed on the support arm (21);

a fixed rod (15) is clamped on one of the movable arm rods (18) through a cross clamp (12), the fixed rod (15) is perpendicular to the movable arm rods (18), and the ultrasonic detection probe (16) is fixedly arranged on the fixed rod (15);

the couplant coating head comprises a couplant coating box body (22), a sponge head (23) is arranged at the bottom of the couplant coating box body (22), and a plurality of liquid leakage through holes (24) communicated with the couplant coating box body (22) are formed in the sponge head (23).

2. The stainless steel pipe welding seam detection device according to claim 1, wherein the transverse adjustment device comprises a base (4) fixedly arranged, side vertical plates (2) are fixedly arranged on two sides of the base (4), a guide rod (5) and a lead screw (3) are arranged between the two side vertical plates (2), a sliding seat (7) is arranged on the guide rod (5) in a sliding manner, a nut (29) matched with the lead screw (3) is fixedly arranged on the sliding seat (7), a deviation correction motor (6) used for driving the lead screw (3) to rotate is fixedly arranged on the side vertical plate (2) on one side, a control end of the deviation correction motor (6) is connected with the controller, and the transverse adjustment device is arranged on the sliding seat (7).

Technical Field

The invention relates to a weld joint detection device, in particular to a stainless steel pipe weld joint detection device.

Background

After the large-scale special equipment is welded, the weld joint needs to be detected, and the quality of the weld joint directly influences the safety of the pressure-bearing special equipment. In the prior art, an ultrasonic weld joint detector is generally adopted for detection.

The ultrasonic welding seam detector is a detection instrument developed according to various national and industrial standards, and can quickly, conveniently, nondestructively and accurately detect, position, evaluate and diagnose various defects such as cracks, welding seams, air holes, sand holes, inclusions, folding and the like in a workpiece. The device is widely applied to the detection of metal structures and welding quality in the industries of construction engineering, steel structure manufacturing, special equipment inspection, boiler pressure vessel manufacturing, engineering machinery manufacturing, ferrous metallurgy, ship manufacturing, petroleum and natural gas equipment manufacturing and the like, and is a necessary nondestructive detection instrument for improving the product quality.

For example, after circular pipes with larger diameters are subjected to butt welding, the steel pipes are placed on a roller frame, a technician holds an ultrasonic weld seam detector to detect the weld seam, a couplant is coated on two sides of the weld seam firstly during detection, then holds a detection probe to perform left-right movement scanning within 10-15cm of the width area of the left side and the right side of the weld seam, and simultaneously rotates the circular pipes through the rotation of the roller frame to gradually complete scanning detection work. The diameter of some stainless steel pipes reaches 3-6 meters, and a welding seam needs to be detected for a plurality of hours, so that the labor amount of detection personnel is large, one welding seam can be detected by one person at the same time, and the detection efficiency is low.

Disclosure of Invention

The invention aims to solve the technical problem of providing a stainless steel pipe butt weld detection device which realizes automatic detection by using an ultrasonic detector.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

nonrust steel pipe welding seam detection device, its key technology is characterized in that, it includes:

a frame for supporting the equipment and providing a mounting platform;

the ultrasonic detector comprises a body and an ultrasonic detection probe connected with the body;

the reciprocating transverse moving mechanism is arranged on the rack, the ultrasonic detection probe is arranged on the reciprocating transverse moving mechanism, and the reciprocating transverse moving mechanism drives the ultrasonic detection probe to horizontally and transversely reciprocate.

As a further improvement of the invention, the reciprocating transverse mechanism comprises a fixedly arranged shell, a transverse rack ring and a servo motor, wherein the servo motor is fixed on the shell, an output shaft of the servo motor is fixedly provided with a driving gear meshed with the transverse rack ring, the upper side and the lower side of the transverse rack ring are in a rack structure, the left side and the right side of the transverse rack ring are fixedly provided with moving arm rods, the shell is fixedly provided with a sliding sleeve, the moving arm rods are sleeved in the sliding sleeve, the driving gear is an incomplete gear, the transverse rack ring moves left when meshed with an upper rack of the transverse rack ring, the transverse rack ring moves right when meshed with a lower rack, and the ultrasonic detection probe is clamped on one of the moving arm rods and moves left and right along with the one of the moving arm rods.

As a further improvement of the invention, a fixed rod is clamped on one of the movable arm rods through a cross clamp, the fixed rod is perpendicular to the movable arm rods, and the ultrasonic detection probe is fixedly arranged on the fixed rod.

As a further improvement of the invention, the device also comprises a deviation rectifying mechanism, wherein the deviation rectifying mechanism comprises a transverse adjusting device, a CCD sensing device and a controller, the transverse adjusting device is arranged on the rack, the reciprocating transverse moving mechanism is fixed on the transverse adjusting device, the CCD sensing device is fixed on the reciprocating transverse moving mechanism, and the CCD sensing device is used for identifying welding seams and controlling the transverse adjusting device to rectify deviation through the controller.

As a further improvement of the present invention, the lateral adjusting device includes a fixedly disposed base, side vertical plates are fixedly disposed on two sides of the base, a guide rod and a lead screw are disposed between the two side vertical plates, a sliding seat is slidably disposed on the guide rod, a nut matched with the lead screw is fixedly disposed on the sliding seat, a deviation-correcting motor for driving the lead screw to rotate is fixedly disposed on the side vertical plate on one side, a control end of the deviation-correcting motor is connected to the controller, and the lateral adjusting device is disposed on the sliding seat.

As a further improvement of the invention, the device also comprises a couplant coating mechanism, wherein the couplant coating mechanism comprises a support arm arranged on the machine frame and a couplant coating head fixed on the support arm.

As a further improvement of the invention, the couplant coating head comprises a couplant coating box body, the bottom of the couplant coating box body is provided with a sponge head, and the sponge head is provided with a plurality of liquid leakage through holes communicated with the couplant coating box body.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

the ultrasonic detection probe is clamped by the reciprocating transverse moving mechanism, so that the ultrasonic detection probe transversely moves left and right to scan a detection area, the manual operation of technicians can be replaced, the labor intensity is greatly reduced, one technician can detect a plurality of welding lines by using a plurality of devices provided by the invention, the working efficiency of welding line detection is improved, and the labor and time cost are saved.

The automatic degree of the invention can be further improved by arranging the deviation rectifying mechanism, the position of the welding line can be automatically identified along with the rotation of the steel pipe, the whole reciprocating transverse moving mechanism is transversely moved by the transverse adjusting device to adjust the position, the lens of the CCD sensing device always faces the welding line, the ultrasonic detection probe always scans in the 10-15cm area on the left side or the right side of the welding line, and the accuracy and the reliability of the detection are ensured.

Through setting up couplant coating mechanism, the coating that makes the couplant has also realized the automation to can go on with ultrasonic detection probe's position and operation in step, couplant coating mechanism is earlier to the regional coating couplant of settlement, passes through ultrasonic detection probe's scanning after that, makes the continuous automatic of whole process go on, and whole degree of automation improves greatly, has saved manpower and time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a side view schematically showing the structure of the reciprocating mechanism.

Fig. 3 is a schematic view of the internal structure of the reciprocating mechanism.

FIG. 4 is a schematic top view of the traverse adjustment mechanism.

Fig. 5 is a schematic structural view of the couplant application mechanism.

Fig. 6 is a schematic sectional structure view of a couplant application head.

Wherein: the device comprises a machine frame 1, a lateral vertical plate 2, a lead screw 3, a base 4, a guide rod 5, a deviation rectifying motor 6, a sliding seat 7, a backing plate 8, a transverse moving flat plate 9, a shell 10, a CCD sensing device 11, a cross clamp 12, a servo motor 13, a fixing plate 14, a fixing rod 15, an ultrasonic detection probe 16, a transverse moving rack ring 17, a moving arm rod 18, a sliding sleeve 19, a driving gear 20, a supporting arm 21, a couplant coating box body 22, a sponge head 23, a liquid leakage through hole 24, a screen plate 25, a cover plate 26, an ultrasonic detector 27, supporting legs 28 and nuts 29.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail and fully with reference to the following embodiments.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "central," "vertical," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship 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 device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically defined otherwise.

The stainless steel pipe weld joint detection device shown in fig. 1-6 comprises a frame 1 for supporting equipment and providing an installation platform, an ultrasonic detector 27 arranged on the frame 1, and a reciprocating transverse movement mechanism arranged on the frame 1, wherein the ultrasonic detector 27 comprises a body and an ultrasonic detection probe 16 connected with the body; the ultrasonic detection probe 16 is arranged on the reciprocating traversing mechanism, and the reciprocating traversing mechanism drives the ultrasonic detection probe 16 to horizontally and reciprocally move, so that the detection area is scanned. As shown in fig. 1, a plurality of supporting feet 28 are provided at the bottom of the frame 1, and the levelness of the supporting frame can be adjusted through the supporting feet 28.

As shown in fig. 2 and 3, the reciprocating traversing mechanism comprises a fixedly arranged housing 10, a traversing rack ring 17 and a servo motor 13, the servo motor 13 is fixed on the housing 10 through a support, an output shaft of the servo motor 13 is fixedly provided with a driving gear 20 engaged with the traversing rack ring 17, the upper and lower sides of the traversing rack ring 17 are in a rack structure, the left and right ends of the traversing rack ring 17 are fixedly provided with moving arms 18, a sliding sleeve 19 is fixedly arranged in the housing 10, the moving arms 18 are sleeved in the sliding sleeve 19, the two moving arms 18 slidably arrange the whole traversing rack ring 17 in the two sliding sleeves 19 to enable the two sliding sleeves to slide left and right, the driving gear 20 is an incomplete gear, the traversing rack ring 17 moves left when engaged with an upper rack of the traversing rack ring 17, the traversing rack ring 17 moves right when engaged with a lower rack, therefore, the traverse rack ring 17 can reciprocate left and right with the continuous rotation of the driving gear 20, and the ultrasonic detection probe 16 is clamped on one of the moving arm rods 18 and moves left and right along with the movement. The scanning range is generally 10-15cm wide on the left and right sides of the weld, so the arrangement of the traverse rack ring 17 and the driving gear 20 is selected according to the magnitude of the horizontal movement. When the ultrasonic detection probe 16 is used, the position of the ultrasonic detection probe 16 can be adjusted to the left side of the welding line, and the ultrasonic detection probe is moved to the right side for scanning detection after detection is finished. The movable arm rod 18 is long enough, two ultrasonic detection probes 16 can be simultaneously mounted on the movable arm rod and are respectively arranged on the left side and the right side of the welding line, synchronous detection on the two sides of the welding line can be achieved, and efficiency is further improved.

As shown in the figure, a fixing rod 15 is clamped and arranged on one of the moving arm rods 18 through a cross clamp 12, the fixing rod 15 is perpendicular to the moving arm rod 18, and the ultrasonic detection probe 16 is fixedly arranged on the fixing rod 15. The cross clamp 12 is connected with the movable arm rod 18 and the fixed rod 15, so that the ultrasonic detection probe 16 can be adjusted left, right, front and back on a horizontal plane, and the arrangement and setting of the position of the device are facilitated.

As shown in the figure, the detection device disclosed by the invention further comprises a deviation rectifying mechanism, wherein the deviation rectifying mechanism comprises a transverse adjusting device, a CCD sensing device and a controller, the transverse adjusting device is arranged on the rack 1, the reciprocating transverse moving mechanism is fixed on the transverse adjusting device, the CCD sensing device is fixed on the reciprocating transverse moving mechanism, and the CCD sensing device is used for identifying a welding line and controlling the transverse adjusting device to rectify the deviation through the controller. Since the welded stainless steel tube may be displaced at a certain angle when placed on the roller frame, the trajectory of the weld seam may be displaced due to the displacement of the weld seam when the welded stainless steel tube is not in the same plane during rotation, and therefore, the scanning position of the ultrasonic detection probe 16 needs to be adjusted according to the displacement of the weld seam.

As shown in fig. 1 and 4, the horizontal adjusting device includes a fixed base 4, side vertical plates 2 are fixedly arranged on two sides of the base 4, two guide rods 5 and lead screws 3 are arranged between the side vertical plates 2, a sliding seat 7 is slidably arranged on the guide rods 5, nuts 29 matched with the lead screws 3 are fixedly arranged on the sliding seat 7, a deviation rectifying motor 6 for driving the lead screws 3 to rotate is fixedly arranged on the side vertical plate 2 on one side, a control end of the deviation rectifying motor 6 is connected with the controller, and the horizontal adjusting device is arranged on the sliding seat 7. The bottom of the sliding seat 7 is provided with 4 linear bearings 30, each guide rod 5 is provided with two linear bearings 30, and the sliding seat 7 is fixedly provided with a transverse moving flat plate 9 through a backing plate 8. The sliding seat 7 moves to drive the transverse moving flat plate 9 to move. The reciprocating transverse moving mechanism is arranged on the transverse moving flat plate 9. Specifically, the housing 10 of the reciprocating traverse mechanism is fixed on a fixing plate 14, the fixing plate 14 is arranged on the traverse plate 9, and the fixing plate 14 and the traverse plate 9 can slide relatively to each other, so that the position of the reciprocating traverse mechanism can be adjusted integrally. The CCD sensor device is also mounted on the fixing plate 14 so as to be in a stable relative positional relationship with the ultrasonic detection probe 16.

As shown in fig. 5, the present invention further includes a coupling agent coating mechanism, air between the ultrasonic probe and the surface of the workpiece will block the ultrasonic wave from transmitting into the workpiece, and in order to make the ultrasonic wave effectively penetrate into the workpiece and ensure sufficient sound intensity transmittance on the detection surface for detection, a liquid conductive medium is required to connect the probe and the workpiece. The coupling agent is used for filling micro gaps between contact surfaces firstly, so that trace air between the gaps does not influence the penetration of ultrasonic waves; secondly, the acoustic impedance difference between the ultrasonic probe and the surface of the workpiece to be measured is reduced through the transition effect of the coupling agent, so that the reflection loss of the ultrasonic energy at the interface is reduced. In addition, the ultrasonic probe also has a lubricating effect, reduces the friction between the surface of the ultrasonic probe and the surface of a workpiece to be detected, enables the ultrasonic probe to be capable of flexibly sliding for detection and prolongs the service life of the ultrasonic probe.

The couplant coating mechanism comprises a support arm 21 arranged on the machine frame 1 and a couplant coating head fixed on the support arm 21. As shown in fig. 6, the couplant coating head comprises a couplant coating box body 22, a sponge head 23 is arranged at the bottom of the couplant coating box body 22, and a plurality of liquid leakage through holes 24 communicated with the couplant coating box body 22 are arranged on the sponge head 23. Be provided with otter board 25 between couplant coating box body 22 bottom and the sponge head 23, be provided with a plurality of meshes on the otter board 25, make the couplant leak down smoothly, the otter board 25 of metal material can strengthen couplant coating box body 22 bottom structural strength and bearing capacity, sponge head 23 can adsorb a large amount of couplant and coat to the steel pipe that is detected, weeping through-hole 24 also makes things convenient for the couplant to flow out smoothly. Be provided with apron 26 on the couplant coating box body 22, apron 26 with the inner wall of couplant coating box body 22 is sliding fit, sets up the cell body in the apron 26 outside, can place the balancing weight, makes the couplant extruded fast through balancing weight gland plate 26 when needing, realizes quick coating.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.