CN114216959A - Chain type self-adaptive detection probe frame and self-adaptive detection device - Google Patents
Chain type self-adaptive detection probe frame and self-adaptive detection device Download PDFInfo
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Abstract
The invention discloses a chain type self-adaptive detection probe frame which comprises a multi-channel chain type probe group, an ultrasonic probe group and an eddy current probe group, wherein the multi-channel chain type probe group comprises the ultrasonic probe group and the eddy current probe group which are rotationally connected, and the multi-channel chain type probe group can coat part of the outer wall of a pipe body to be detected along the circumferential direction; the holding device is used for adjusting the coating curvature of the multi-channel chain type probe group so as to adapt to the to-be-detected tube bodies with different outer diameters; the rotary adjusting device is connected with the clasping device and can rotate relatively to enable the axial symmetry center plane of the probe frame to be parallel to or tend to coincide with the projection of the central line of the pipe body to be measured in the horizontal direction; the transverse adjusting device can drive the rotation adjusting device to translate, so that the rotation center of the rotation adjusting device coincides with or tends to coincide with the projection of the central line of the pipe body to be measured in the horizontal direction. The invention adopts a chain type arrangement mode, can be suitable for the detection of steel pipes with different outer diameter specifications in a larger range, reduces the detection blind area and is beneficial to improving the detection efficiency.
Description
Technical Field
The invention belongs to the technical field of ultrasonic and eddy automatic nondestructive testing of large thick-wall steel pipes, and particularly relates to a chain type self-adaptive detection probe frame and a self-adaptive detection device.
Background
Large thick-wall steel pipes used on some important equipment or facilities usually need to be subjected to ultrasonic and eddy current combined nondestructive inspection, ultrasonic is used for detecting deeper defects inside the steel pipes, and eddy current is used for detecting the defects of the near-surface shallow layers of the steel pipes. The ultrasonic detection adopts the combined detection of longitudinal wave detection and transverse wave detection, namely, the ultrasonic probe comprises a longitudinal wave straight probe and a transverse wave inclined probe. The transverse wave angle probe is divided into angle probe incident along the circumference of the cross section of the steel pipe and angle probe incident along the axial direction of the steel pipe according to the directivity. Generally, to avoid missed detection, at least 20% or more of the repeat coverage (generally determined by probe size) between detection points is required.
Because the propagation of ultrasonic waves has directivity, and the propagation of ultrasonic waves needs to be coupled by coupling liquid (the probe frame of the invention adopts water as the coupling liquid), the incident surface of each ultrasonic probe points to the surface of a detected steel pipe in the automatic detection process, and a gap of about 0.1-0.3 mm needs to be kept between the ultrasonic probe and the surface of the steel pipe for forming a coupling water film. In the automatic detection process, due to the deviation of the axial movement direction of the probe frame and the axial direction of the pipe, the radial runout of the pipe in the circumferential direction when the pipe is bent to cause the rotation of the steel pipe and other factors, the pointing change of the probe and the change of the distance between the probe and the outer surface of the pipe can be caused, and therefore the probe frame needs to follow the change of the shape and the position of the surface of the pipe at any time in the detection process.
In order to meet the detection requirements of steel pipes with different outer diameters, the conventional ultrasonic and eddy current automatic detection probe frame is usually arranged in a manner of arranging probes in a straight line along the axial direction. As shown in fig. 1, 8 ultrasound probes of the same type are arranged in a line along the axial direction. This probe arrangement has several disadvantages: (1) the axial occupation space is big, easily causes the steel pipe head and the tail both ends to have great detection blind area, and during the detection promptly, the probe in the forefront has walked out the steel pipe surface, but the probe in the rearmost still has great detection distance from the steel pipe terminal surface. (2) Because the arrangement distance of the probes along the axial direction is determined by the size of the probes, the repeated coverage rate of the probes along the axial direction cannot be adjusted (namely the repeated coverage rate of the adjacent probes along the axial direction of the pipe is 0%), in order to avoid missing detection, a single group of probes is adopted for detection, and the repeated coverage rate is adjusted through the scanning screw pitch of the single group of probes, so that the detection efficiency is low. A single set of probes, as defined herein, refers to a combination of a single set of different types of probes, i.e., including only 1 straight longitudinal wave probe, 2 oblique transverse wave probes at different incidence directions, 1 eddy current probe, etc.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the chain type self-adaptive detection probe frame and the self-adaptive detection device, which can adapt to pipe bodies with different outer diameters, have more comprehensive detection, higher detection precision and higher detection efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: a chain self-adaptive test probe holder for testing pipe bodies, comprising:
the multichannel chain type probe group comprises an ultrasonic probe group and a vortex probe group, and the ultrasonic probe group and the vortex probe group are rotationally connected, so that the ultrasonic probe group and the vortex probe group can wrap part of the outer wall of the pipe body to be tested along the circumferential direction;
the holding device is connected with the multi-channel chain type probe set and is used for adjusting the coating curvature of the multi-channel chain type probe set so as to adapt to-be-detected tube bodies with different outer diameters;
the rotary adjusting device is connected with the clasping device and can rotate relatively to enable the axial symmetry center plane of the probe frame to be parallel to or tend to coincide with the projection of the central line of the pipe body to be measured in the horizontal direction;
the transverse adjusting device can drive the rotary adjusting device to translate along the radial direction of the pipe body to be detected, so that the projection of the rotary center of the rotary adjusting device and the central line of the pipe body to be detected in the horizontal direction is overlapped or tends to be overlapped;
the multichannel chain type probe group, the holding device, the rotary adjusting device and the transverse adjusting device are sequentially arranged outwards from the direction of the outer wall of the pipe body to be detected.
Furthermore, the holding device comprises an inclined strut respectively connected with two end parts of the multi-channel chain type probe group, a guide rod connected with the inclined strut, a connecting frame movably connected with the guide rod, a rotating shaft used for being rotatably connected with the rotary adjusting device and a positioning rod; the guide rod is sleeved with an elastic piece which is respectively abutted with the inclined strut and the connecting frame; the positioning rod is used for radial positioning of the multi-channel chain type probe set.
Furthermore, the inclined strut is U-shaped with an opening facing downwards, and the opening ends of the inclined strut are respectively connected to the two ends of the multichannel chain type probe group in the width direction; the connecting frame is U-shaped with an upward opening, and the opening ends of the connecting frame are respectively connected with two sides of the rotation adjusting device; the number of the guide rods is two, and two ends of the guide rods are respectively connected with the closed end of the inclined strut and the closed end of the connecting frame.
Furthermore, the number of the positioning rods is at least two, the positioning rods are arranged along the axis direction of the pipe body to be detected, and two ends of the positioning rods are respectively connected with the rotation adjusting device and the multi-channel chain-type probe set.
Furthermore, the rotation adjusting device comprises a rotation frame connected with the clasping device and a rotation seat connected with the transverse adjusting device, the rotation frame is provided with a rotation neck extending vertically, and the rotation seat is sleeved with the rotation neck and can rotate relatively.
Further, the transverse adjusting device comprises a base and a linear rail arranged below the base.
Furthermore, ultrasonic probe group includes adjacent at least two sets of compressional wave straight probe of circumference, and adjacent at least two sets of shear wave oblique probes of circumference, be equipped with a plurality of eddy current probe on the eddy current probe group.
Further, all be equipped with the universal bearing ball on ultrasonic probe group and the vortex probe group, this universal bearing ball butt body that awaits measuring rolls, and makes and have the clearance that is used for forming the coupling water film between the outer wall of multichannel chain probe group and the body that awaits measuring.
Further, the width direction both sides of multichannel chain probe group all set up the universal bearing ball, and a plurality of universal bearing balls distribute along the circumference of the body that awaits measuring.
The invention also discloses a self-adaptive detection device, which is used for detecting the pipe body and comprises the following components:
the roller assembly is used for driving the pipe body to be detected to circumferentially rotate around the axis of the pipe body to be detected;
the travelling crane is moved and can translate along the axial direction of the pipe body to be measured;
the lifting frame is connected with the movable travelling crane and can move up and down to be close to or far away from the outer wall of the pipe body to be detected;
the multichannel chain type probe group comprises an ultrasonic probe group and a vortex probe group, and the ultrasonic probe group and the vortex probe group are rotationally connected, so that the ultrasonic probe group and the vortex probe group can wrap part of the outer wall of the pipe body to be tested along the circumferential direction;
the holding device is connected with the multi-channel chain type probe set and is used for adjusting the coating curvature of the multi-channel chain type probe set so as to adapt to-be-detected tube bodies with different outer diameters;
the rotary adjusting device is connected with the clasping device and can rotate relatively to enable the axial symmetry center plane of the probe frame to be parallel to or tend to coincide with the projection of the central line of the pipe body to be measured in the horizontal direction;
the transverse adjusting device is connected with the lifting frame and can drive the rotary adjusting device to translate along the lifting frame so that the rotary center of the rotary adjusting device is overlapped with or tends to be overlapped with the projection of the central line of the pipe body to be measured in the horizontal direction;
the multichannel chain type probe group, the holding device, the rotary adjusting device and the transverse adjusting device are sequentially arranged outwards from the direction of the outer wall of the pipe body to be detected.
The self-adaptive detection device provided by the invention can always ensure that the probe frame can be self-adaptively follow the changes of the shape and the position of the outer surface of the detected steel pipe in the automatic detection process, ensure the precision of ultrasonic and eddy nondestructive detection, prevent missing detection and greatly improve the detection efficiency.
The chain type self-adaptive detection probe frame adopts a chain type probe group structure, the ultrasonic probe group and the eddy current probe group are connected in series in a hinged mode to form a group of probe chains, and the probe chains can be coated and attached to the outer surfaces of pipes in a self-adaptive mode according to the change of the outer diameters of different pipes. On the probe frame, the degree of freedom of rotation, transverse movement and vertical direction extension and retraction are simultaneously arranged, so that the probe frame can be always ensured to be adaptive to follow the change of the surface shape and position of the pipe in the automatic detection process, and the precision of ultrasonic and eddy current detection is ensured.
Compared with the conventional nondestructive test probe holder, the chain type self-adaptive test probe holder has the following advantages: (1) the multi-channel chain type probe set adopts a chain type arrangement mode, so that the multi-channel chain type probe set can be suitable for the detection of steel pipes with different outer diameter specifications in a larger range; (2) because the multi-channel chain type probe set adopts a chain type arrangement mode, the probes can be circumferentially arranged along the outer surface of the steel pipe, the axial space occupation is small, the detection blind areas at two ends of the steel pipe can be reduced, and the detection blind areas can be reduced by half under the condition that the number of the probes is the same; (3) the circumferential arrangement mode of the multi-channel chain type probe group is easy to realize the arrangement of a plurality of groups (multi-channel) of probes, thereby being beneficial to improving the detection efficiency; (4) because the multichannel chain type probe group is arranged along the circumferential direction of the outer surface of the steel pipe, the requirement of the repeated coverage rate between the detection points of the adjacent probes along the axial direction can be met by setting the scanning screw pitch of the bolt type scanning. As shown in FIG. 2, the 8 probes are arranged along the circumferential direction of the steel pipe in two groups, and the part shown by the cross section line is the repeated coverage area in the axial direction during the spiral scanning detection of the adjacent probes.
Drawings
Fig. 1 is a schematic diagram of probes arranged along the axial direction of a pipe body to be tested in the prior art.
Fig. 2 is a schematic view of the ultrasonic probes in the ultrasonic probe group of the present invention arranged along the circumferential direction.
FIG. 3 is a perspective view of a matching structure of the chain type adaptive detection probe holder and the tube body to be detected according to the present invention.
FIG. 4 is a perspective view of a chain adaptive test probe holder of the present invention.
FIG. 5 is a schematic diagram of a screenshot structure of a chain type adaptive test probe holder of the present invention.
FIG. 6 is a perspective view of a multi-channel chain probe set of the present invention.
FIG. 7 is a schematic view of a portion of the structure of an ultrasound probe set according to the present invention.
FIG. 8 is a schematic diagram of the structure of an eddy current probe set according to the present invention.
Fig. 9 is a perspective view of a matching structure of the adaptive detection device and the tube to be detected according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3-8, a chain type adaptive detection probe holder for detecting a tube body comprises a multi-channel chain type probe set 2, a clasping device 3, a rotary adjusting device 4 and a transverse adjusting device 5, which are sequentially arranged from the direction of the outer wall of a tube body 1 to be detected to the outside.
Multichannel chain probe group 2, including ultrasonic probe group 21 and vortex probe group 22, and ultrasonic probe group 21 and vortex probe group 22 rotate continuously for it can be along the partial outer wall of the body 1 that awaits measuring of circumferencial direction cladding.
In the present embodiment, the ultrasound probe group 21 includes at least two sets of longitudinally straight probes 211 that are circumferentially adjacent to each other, and at least two sets of transversely inclined probes 212 that are circumferentially adjacent to each other, and in the present embodiment, each set of longitudinally straight probes 211 and transversely inclined probes 212 is provided with 4 longitudinally straight probes and 4 transversely inclined probes. The eddy current probe group 22 is provided with a plurality of eddy current probes 221, and in this embodiment, eight eddy current probes 221 are specifically provided, as shown in fig. 8. The longitudinal wave straight probe 211, the transverse wave oblique probe 212 and the eddy current probe 221 are hinged and connected in series to form a multi-channel chain type probe set 2 in a chain type structure, in other words, the shape of the multi-channel chain type probe set 2 is variable and can be changed according to the change of the outer diameter of the pipe body 1 to be measured, and particularly the curvature is changed.
Define multichannel chain probe group 2 and be its width direction along the length direction extension of body 1 that awaits measuring to all set up universal bearing ball 23 in multichannel chain probe group 2's width direction both sides, all set up universal bearing ball 23 on every group compressional wave straight probe 211, transverse wave oblique probe 212, vortex probe group 22 in addition, thereby set up universal bearing ball 23 in succession at multichannel chain probe group 2's length direction, a plurality of universal bearing balls 23 distribute along the circumference of the body 1 that awaits measuring promptly. In the present embodiment, four universal bearing balls 23 are provided on the ultrasonic probe set 21 and the eddy current probe set 22, respectively.
When multichannel chain probe group 2 cladding is in the outer wall outside of body 1 that awaits measuring, and when following the activity of body 1 outer wall that awaits measuring, all universal bearing balls 23 butt body 1 that awaits measuring's outer wall rolls to make have the clearance between multichannel chain probe group 2 and the outer wall of body 1 that awaits measuring, this clearance is used for forming the coupling water film. Meanwhile, the universal bearing ball 23 is used for bearing the pressure of the probe frame pressing the surface of the pipe body 1 to be detected, so that the multichannel chain type probe group 2 is in rolling contact with the surface of the pipe body 1 to be detected in the detection process, and the surface of the pipe body 1 to be detected is prevented from being scratched in the detection process.
In order to protect the ultrasonic probe, the longitudinal wave straight probe and the transverse wave inclined probe are both arranged in the wear-resisting block 24, so that the abrasion caused by the friction between the ultrasonic probe and the surface of the pipe body 1 to be detected can be prevented. The wear-resistant block 24 is provided with a water inlet pipe joint for introducing coupling water, and an arc surface is processed on a working surface matched with the surface of the pipe body 1 to be detected and is used for being matched with the surface of the pipe body 1 to be detected, so that a layer of coupling water film is formed between the surface of the ultrasonic probe and the surface of the pipe body 1 to be detected.
The eight eddy current probes 221 are installed inside the wear-resistant block 24 and are lightly pressed on the outer surface of the pipe body 1 to be tested through the micro springs, so that the accelerated wear due to too large contact pressure between the eddy current probes 221 and the surface of the pipe body 1 to be tested can be prevented.
The holding device 3 is connected with the multi-channel chain type probe set 2 and used for adjusting the coating curvature of the multi-channel chain type probe set 2 so as to adapt to the pipe bodies 1 to be measured with different outer diameters. The holding device 3 comprises an inclined bracket 31 respectively connected with two end parts of the multi-channel chain type probe group 2, a guide rod 32 connected with the inclined bracket 31, a connecting frame 33 movably connected with the guide rod 32, a rotating shaft 34 used for being rotatably connected with the rotary adjusting device 4, and a positioning rod 35. The connecting frame 33 can rotate around the rotating shaft 34 to adapt to different outer diameters of the pipe body 1 to be measured.
The guide rod 32 is sleeved with an elastic part 36, and the elastic part 36 is respectively abutted against the inclined bracket 31 and the connecting bracket 33. The elastic piece 36 is self-adaptively telescopic along with the curvature change of the outer surface of the pipe body 1 to be detected, so that the multi-channel chain type probe set 2 is always coated on the outer surface of the pipe body 1 to be detected in the detection process.
Specifically, the inclined bracket 31 is U-shaped with an opening facing downward, the open end of the inclined bracket is connected to two ends of the multi-channel chain-type probe set 2 in the width direction, and the closed end of the inclined bracket is connected to one end of the guide rod 32. The connecting frame 33 is U-shaped with an upward opening, the open end of the connecting frame is connected to two sides of the rotation adjusting device 4, and the closed end of the connecting frame is connected to the other end of the guide rod 32. In the present embodiment, the number of the guide rods 32 is two.
The quantity of locating lever 35 is at least two, it is laid along the axis direction of body 1 that awaits measuring, two locating levers 35 are located multichannel chain probe group 2's width direction's both sides respectively promptly, the upper end of locating lever 35 links to each other with 4 activities of gyration adjusting device, its lower extreme links to each other with multichannel chain probe group 2, make multichannel chain probe group 2 follow 5 synchronous lateral shifting of lateral adjustment device, locating lever 35 is used for the radial positioning of multichannel chain probe group 2, guarantee multichannel chain probe group 2 promptly along the axial symmetry central plane symmetric arrangement of probe frame.
And the rotary adjusting device 4 is connected with the holding device 3 and can rotate relative to the transverse adjusting device 5, so that the axial symmetry center plane of the probe frame is parallel to or tends to coincide with the projection of the central line of the pipe body 1 to be measured in the horizontal direction. The rotary adjusting device 4 comprises a rotary frame 41 and a rotary seat 42, the rotary frame 41 is connected with the clasping device 3, in particular to the rotating shaft 34 of the clasping device 3, and the rotary frame 41 is provided with a rotary neck 411 which extends vertically upwards; the revolving base 42 is sleeved with the revolving neck 411 and can rotate relatively, in this embodiment, the revolving base 42 is sleeved outside the revolving neck 411 and is connected with the revolving neck 411 through a rolling bearing.
The transverse adjusting device 5 can drive the rotation adjusting device 4 to move in a radial direction of the pipe body 1 to be measured, so that the rotation center of the rotation adjusting device 4 coincides with or tends to coincide with the projection of the central line of the pipe body 1 to be measured in the horizontal direction. The lateral adjustment device 5 comprises a base 51 and a linear rail 52 arranged below the base 51.
As shown in fig. 9, an adaptive detection device for detecting a pipe body includes:
the roller assembly 6 is used for driving the pipe body 1 to be tested to rotate circumferentially around the axis of the pipe body;
the movable travelling crane 7 can translate along the axial direction of the pipe body 1 to be measured;
the lifting frame 8 is arranged on the mobile crane 7 and can move up and down to be close to or far away from the outer wall of the pipe body 1 to be tested;
the multi-channel chain type probe group 2 has the same structure as the structure and is not described again;
the clasping device 3 has the same structure as the above structure, and is not described again;
the rotation adjusting device 4 has the same structure as the above structure, and is not described again;
the transverse adjusting device 5 has the same structure as the above structure, and is not described again; the main function is that when the axial symmetry center plane of the probe frame is not parallel to the central line of the pipe body 1 to be measured in the horizontal projection direction (when an included angle exists), the rotary frame 41 is driven to rotate and swing by the rotary component force generated in the moving process of the moving travelling crane 7, so that the axial symmetry center plane of the probe frame and the central line of the pipe body 1 to be measured tend to be consistent in direction (parallel to each other) above the horizontal projection plane;
the lateral adjustment device 5 is connected to a crane 8, more specifically the lateral adjustment device 5 can be translated along the crane 8. The method has the main function that when the rotation center of the probe frame deviates from the central line of the pipe body to be measured 1 in the horizontal projection direction, the horizontal component force generated in the moving process of the moving crane 7 drives the probe frame to be adaptively adjusted along the horizontal direction, so that the rotation center of the probe frame and the central line of the pipe body to be measured 1 tend to coincide in the horizontal projection direction.
When the multi-channel chain type probe group is detected, the lifting frame 8 is utilized to adjust the multi-channel chain type probe group 2 to be attached to the outer wall of the pipe body 1 to be detected, the pipe body 1 to be detected rotates at a given rotating speed, the travelling crane 7 is moved to move horizontally along the length direction of the pipe body 1 to be detected, the chain type self-adaptive detection probe frame is driven to move horizontally along the axis direction of the pipe body 1 to be detected at a given speed, spiral scanning detection is carried out on the pipe body 1 to be detected through rotation and axial two-degree-of-freedom coordinated motion, and detection of the whole outer wall of the pipe body 1 to be detected is achieved.
The ultrasonic eddy-current combined automatic nondestructive inspection method is particularly suitable for nondestructive inspection of large steel pipes, and can be used for ultrasonic and eddy-current combined automatic nondestructive inspection of thick-wall steel pipes with the diameter range of phi 200-1200 mm, the thickness range of 30-150 mm and the length of 300-12000 mm.
The steel pipe with a diameter of 800mm is taken as an example for explanation: the multichannel chain probe group comprises 2 groups of 8-channel longitudinal wave ultrasonic straight probes, 2 groups of 8-channel transverse wave ultrasonic inclined probes and 1 group of 8-channel eddy current probes, the axial coverage length of the probes of the multichannel chain probe group is 80mm, and the probes can be detected according to the scanning pitch of 64mm during detection according to the repeated coverage rate of 20%, namely, the probes move 64mm in the axial direction of the probe frame when the pipe rotates for one circle. The distance between the detection points in the circumferential direction is 3mm, and about 838 detection points are arranged in each circle on the circumference. The ultrasonic flaw detector used in the detection example can trigger 200 ultrasonic pulses per second by each ultrasonic probe, and not less than 4 ultrasonic pulses need to be transmitted near each detection point according to the detection process requirement, so that each probe can detect 50 detection points per second at most, and the linear speed requirement converted into the pipe circumferential direction according to the sampling step distance is not more than 150mm/s, namely, the rotating speed requirement of the phi 800mm pipe is not more than 3.53r/min, and the axial detection speed is not more than 3.53 multiplied by 64 and is not more than 226mm/min, namely, for the phi 800mm pipe, when the circumferential sampling step distance is 3mm, the length of 226mm can be detected per minute, and the detection efficiency is high.
The foregoing detailed description is intended to illustrate and not limit the invention, which is intended to be within the spirit and scope of the appended claims, and any changes and modifications that fall within the true spirit and scope of the invention are intended to be covered by the following claims.
Claims (10)
1. The utility model provides a chain self-adaptation detects probe frame for detect the body, its characterized in that includes:
the multichannel chain-type probe group (2) comprises an ultrasonic probe group (21) and a vortex probe group (22), wherein the ultrasonic probe group (21) and the vortex probe group (22) are rotationally connected, so that the ultrasonic probe group and the vortex probe group can wrap part of the outer wall of the pipe body (1) to be tested in the circumferential direction;
the holding device (3) is connected with the multi-channel chain type probe group (2) and is used for adjusting the coating curvature of the multi-channel chain type probe group (2) so as to adapt to the pipe bodies (1) to be detected with different outer diameters;
the rotation adjusting device (4) is connected with the clasping device (3) and can rotate relatively to enable the axial symmetry center plane of the probe frame to be parallel to or tend to coincide with the projection of the central line of the pipe body to be measured (1) in the horizontal direction;
the transverse adjusting device (5) can drive the rotary adjusting device (4) to translate along the radial direction of the pipe body to be measured (1), so that the rotary center of the rotary adjusting device (4) is overlapped with or tends to be overlapped with the projection of the central line of the pipe body to be measured (1) in the horizontal direction;
the multichannel chain type probe group (2), the holding device (3), the rotary adjusting device (4) and the transverse adjusting device (5) are sequentially arranged outwards from the direction of the outer wall of the pipe body (1) to be measured.
2. The chain adaptive test probe holder of claim 1, wherein: the holding device (3) comprises an inclined strut (31) respectively connected with two end parts of the multi-channel chain type probe group (2), a guide rod (32) connected with the inclined strut (31), a connecting frame (33) movably connected with the guide rod (32), a rotating shaft (34) rotatably connected with the rotary adjusting device (4), and a positioning rod (35); the guide rod (32) is sleeved with an elastic piece (36) which is respectively abutted against the inclined bracket (31) and the connecting frame (33); the positioning rod (35) is used for radial positioning of the multi-channel chain-type probe group (2).
3. The chain adaptive test probe holder of claim 2, wherein: the inclined strut frame (31) is U-shaped with an opening facing downwards, and the opening ends of the inclined strut frame are respectively connected to the two ends of the multichannel chain type probe group (2) in the width direction; the connecting frame (33) is U-shaped with an upward opening, and the opening ends of the connecting frame are respectively connected with two sides of the rotary adjusting device (4); the number of the guide rods (32) is two, and two ends of the guide rods are respectively connected with the closed end of the inclined strut frame (31) and the closed end of the connecting frame (33).
4. The chain adaptive test probe holder of claim 2, wherein: the number of the positioning rods (35) is at least two, the positioning rods are distributed along the axis direction of the pipe body (1) to be detected, and two ends of the positioning rods are respectively connected with the rotary adjusting device (4) and the multi-channel chain-type probe set (2).
5. The chain adaptive test probe holder of claim 1, wherein: the rotary adjusting device (4) comprises a rotary frame (41) connected with the enclasping device (3) and a rotary seat (42) connected with the transverse adjusting device (5), the rotary frame (41) is provided with a rotary neck (411) extending vertically, and the rotary seat (42) is sleeved with the rotary neck (411) and can rotate relatively.
6. The chain adaptive test probe holder of claim 1, wherein: the transverse adjusting device (5) comprises a base (51) and a linear rail (52) arranged below the base (51).
7. The chain adaptive test probe holder of claim 1, wherein: the ultrasonic probe group (21) comprises at least two groups of longitudinal wave straight probes (211) which are adjacent in the circumferential direction and at least two groups of transverse wave inclined probes (212) which are adjacent in the circumferential direction, and a plurality of eddy current probes (221) are arranged on the eddy current probe group (22).
8. The chain adaptive test probe holder of claim 7, wherein: all be equipped with universal bearing ball (23) on ultrasonic probe group (21) and vortex probe group (22), the outer wall roll of body (1) that awaits measuring of this universal bearing ball (23) butt, and make and have the clearance that is used for forming the coupling water film between the outer wall of multichannel chain probe group (2) and body (1) that awaits measuring.
9. The chain adaptive test probe holder of claim 8, wherein: the width direction both sides of multichannel chain probe group (2) all set up universal bearing ball (23), and a plurality of universal bearing ball (23) distribute along the circumference of body (1) that awaits measuring.
10. The utility model provides an adaptive detection device for detect the body, its characterized in that includes:
the roller assembly (6) is used for driving the pipe body (1) to be tested to rotate circumferentially around the axis of the pipe body;
the movable travelling crane (7) can translate along the axial direction of the pipe body (1) to be tested;
the lifting frame (8) is connected with the movable travelling crane (7) and can move up and down to be close to or far away from the outer wall of the pipe body (1) to be tested;
the multichannel chain-type probe group (2) comprises an ultrasonic probe group (21) and a vortex probe group (22), wherein the ultrasonic probe group (21) and the vortex probe group (22) are rotationally connected, so that the ultrasonic probe group and the vortex probe group can wrap part of the outer wall of the pipe body (1) to be tested in the circumferential direction;
the holding device (3) is connected with the multi-channel chain type probe group (2) and is used for adjusting the coating curvature of the multi-channel chain type probe group (2) so as to adapt to the pipe bodies (1) to be detected with different outer diameters;
the rotation adjusting device (4) is connected with the clasping device (3) and can rotate relatively to enable the axial symmetry center plane of the probe frame to be parallel to or tend to coincide with the projection of the central line of the pipe body to be measured (1) in the horizontal direction;
the transverse adjusting device (5) is connected with the lifting frame (8) and can drive the rotary adjusting device (4) to translate along the lifting frame (8) so that the rotary center of the rotary adjusting device (4) coincides with or tends to coincide with the projection of the central line of the pipe body (1) to be measured in the horizontal direction;
the multichannel chain type probe group (2), the holding device (3), the rotary adjusting device (4) and the transverse adjusting device (5) are sequentially arranged outwards from the direction of the outer wall of the pipe body (1) to be measured.
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Cited By (1)
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| CN116359346A (en) * | 2023-05-30 | 2023-06-30 | 广东汕头超声电子股份有限公司 | Blade curved surface detection equipment based on chain type flexible probe |
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| CN114216959B (en) | 2024-03-22 |
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