CN106896158B - Piezoelectric ultrasonic detection probe system for pipeline detection - Google Patents
Piezoelectric ultrasonic detection probe system for pipeline detection Download PDFInfo
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- CN106896158B CN106896158B CN201510965224.0A CN201510965224A CN106896158B CN 106896158 B CN106896158 B CN 106896158B CN 201510965224 A CN201510965224 A CN 201510965224A CN 106896158 B CN106896158 B CN 106896158B
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- 239000000523 sample Substances 0.000 title claims abstract description 339
- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 239000000919 ceramic Substances 0.000 claims description 16
- 238000007689 inspection Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2437—Piezoelectric probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
- G01N2291/2636—Surfaces cylindrical from inside
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- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a piezoelectric ultrasonic detection probe system for pipeline detection, and belongs to the technical field of pipeline detection. In the probe system, a probe seat is rotatably connected with the front end of a probe arm through a probe seat rotating shaft, 2 probe seat limiting springs are symmetrically arranged on two sides of the probe arm, and two ends of each probe seat limiting spring are respectively fixed on the probe seat and the probe arm and used for providing pretightening force for the probe seat so as to limit the probe seat in a preset stroke. The probe arm is fixed on the base through a probe arm rotating shaft and can rotate within a preset angle. The rear end of the probe arm is rotatably connected with the pull rod through a pull rod rotating shaft, and the probe arm limiting spring is sleeved on the pull rod and used for providing pretightening force for the probe arm so as to limit the probe arm in a preset stroke. The probe system can keep good fit with the pipe wall when the deformation structure such as the concave part exists in the pipe, and the probe is always vertical to the inner wall of the pipe, so that more accurate pipeline internal detection data can be obtained.
Description
Technical Field
The invention relates to the technical field of pipeline detection, in particular to a piezoelectric ultrasonic detection probe system for pipeline detection.
Background
In the process of transporting by using pipelines, pipeline detection technology is required to detect whether the pipelines have defects or not. Pipeline detection technology can be divided into inner detection and outer detection according to different positions of detection equipment. The technology for detecting the defects of pipe wall corrosion, geometric pits, mechanical damage, cracks and the like of the pipeline is a technology commonly used for effectively detecting the defects of pipe wall corrosion, geometric pits, mechanical damage, cracks and the like, and generally comprises geometric diameter measurement, magnetic flux leakage detection, piezoelectric ultrasonic detection, electromagnetic ultrasonic detection and the like.
The piezoelectric ultrasonic detection is widely applied on the basis of simple operation, and can truly and accurately reflect the defect phenomenon of the pipeline. In general, in the process of performing internal inspection on a pipeline, a probe needs to be installed on a detector, the probe is extended into the pipeline to detect the inner wall of the pipeline, and collected data is transferred and stored in the detector.
The inventors found that the prior art has at least the following problems:
the probe that prior art provided is single probe structure, and when deformation structure such as pipeline had sunken, it can't guarantee good laminating nature with the pipeline inner wall, and then can't obtain true testing result.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a piezoelectric ultrasonic detection probe system which can still ensure good fitting performance with the inner wall of a pipeline when the pipeline has a deformation structure such as a dent and the like and is used for detecting a long-distance and medium-caliber high-pressure conveying pipeline for conveying mediums such as oil, water and the like. The specific technical scheme is as follows:
A piezoelectric ultrasonic inspection probe system for pipe inspection, comprising a plurality of probes, wherein the probe system further comprises: the probe comprises a probe seat, a probe arm, a base, 2 probe seat limiting springs, a probe arm limiting spring, a pull rod, a probe seat rotating shaft, a probe arm rotating shaft and a pull rod rotating shaft, wherein a plurality of probes are arranged on the probe seat;
the probe seat is rotatably connected with the front end of the probe arm through the probe seat rotating shaft, the 2 probe seat limiting springs are symmetrically arranged on two sides of the probe arm, and the two ends of the probe seat are respectively fixed on the probe seat and the probe arm and are used for providing pretightening force for the probe seat so as to limit the probe seat in a preset stroke;
the probe arm is fixed on the base through the probe arm rotating shaft and can rotate in a preset angle, the rear end of the probe arm is rotatably connected with the pull rod through the pull rod rotating shaft, and the probe arm limiting spring is sleeved on the pull rod and used for providing a pretightening force for the probe arm so as to limit the probe arm in a preset stroke.
Specifically, the probe seat comprises a square probe seat body, a probe seat mounting rack and wear-resistant ceramic strips;
Sliding grooves are formed in the opposite side walls of the probe seat mounting frame, the side parts of the probe seat body are embedded into the sliding grooves, and the probe seat body is fixed on the probe seat mounting frame through screws;
the upper ends of the opposite side walls of the probe seat mounting frame are respectively provided with the wear-resistant ceramic strips, and the wear-resistant ceramic strips are used for providing detection lift-off values for a plurality of probes.
Specifically, a plurality of probe mounting holes are arranged on the probe seat body, and elastic check rings are arranged in the probe mounting holes and used for clamping the probes.
Specifically, as the preference, 8 probe mounting holes are arranged on the probe seat body, 8 probe mounting holes are 3 rows along the axial direction of a pipeline to be detected, and are uniformly arranged in an array mode with equal angles in the circumferential direction, and triangles formed by the adjacent 3 probe mounting holes are consistent.
Specifically, as an optimization, the probe seat mounting frame comprises a square frame body with three closed surfaces and a connecting piece, and the square frame body comprises a first side surface, a rear end surface and a second side surface which are sequentially connected;
the sliding groove is arranged in the inner walls of the first side face and the second side face, and the connecting piece is fixed on the outer wall of the rear end face;
The front end of the probe arm extends into the connecting piece, and the probe seat rotating shaft penetrates through the front end of the probe arm and the connecting piece so that the probe arm and the probe seat mounting frame can be rotatably connected;
And two ends of the probe seat limiting spring are respectively connected with the side wall of the connecting piece and the side wall of the probe arm so as to limit the probe seat in a preset stroke.
Preferably, the probe seat limiting spring is an extension spring.
Specifically, as an optimization, the base comprises a piezoelectric ultrasonic detector mounting section, a probe arm mounting section and a pull rod mounting section which are sequentially connected;
The piezoelectric ultrasonic detector mounting section is provided with 2 first through holes for mounting the piezoelectric ultrasonic detector;
The middle part of the probe arm installation section is provided with a slit for accommodating the probe arm, and the probe arm rotating shaft penetrates through the probe arm and the probe arm installation section so that the probe arm can rotate within a preset angle;
The pull rod mounting section is provided with a second through hole for enabling the front end of the pull rod to pass through, and the pull rod rotating shaft passes through the front end of the pull rod and the rear end of the probe arm so as to limit the probe arm in a preset stroke.
Specifically, the body of the probe arm limiting spring is sleeved on the pull rod, and two end parts are respectively fixed on the outer part of the pull rod mounting section and the rear end of the pull rod.
Preferably, the probe arm limit spring is a compression spring.
Preferably, the probe seat, the probe arm, the base, the pull rod, the probe seat rotating shaft, the probe arm rotating shaft and the pull rod rotating shaft are all made of metal alloy.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
The piezoelectric ultrasonic detection probe system provided by the embodiment of the invention is suitable for detecting long-distance and medium-caliber high-pressure conveying pipelines for conveying oil, water and other mediums, and the probe system can limit the mediums in a preset stroke by adopting the rotatable probe seat and the probe arm and using the limiting spring.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a side view of a piezoelectric ultrasonic inspection probe system for pipe inspection provided in an embodiment of the present invention;
FIG. 2 is a front view of a piezoelectric ultrasonic inspection probe system for pipe inspection provided in accordance with yet another embodiment of the present invention;
FIG. 3 is a schematic view of the working state of a piezoelectric ultrasonic detection probe system in a pipeline according to another embodiment of the present invention;
FIG. 4 is a schematic view of a probe holder in a piezoelectric ultrasonic inspection probe system according to another embodiment of the present invention;
FIG. 5 is a schematic view of the arrangement of probes in a probe mounting hole of a probe holder body in a piezoelectric ultrasonic inspection probe system according to still another embodiment of the present invention;
FIG. 6 is a graph comparing displacement states of a probe arm and a probe seat of a piezoelectric ultrasonic testing probe system when the probe arm and the probe seat are matched to displace according to another embodiment of the invention.
Reference numerals denote:
1. a probe seat, a probe head seat and a probe head seat,
101. A probe seat body,
102. The probe seat mounting frame,
1021. A square frame body, a square frame body and a square frame body,
1022. The connecting piece is provided with a connecting piece,
103. A wear-resistant ceramic strip,
104. The probe is provided with a mounting hole for the probe,
105. The elastic check ring is provided with a plurality of elastic check rings,
106. The screw is provided with a plurality of screw bolts,
2. The probe arm is provided with a plurality of probe arms,
3. A base, a base seat and a base seat,
301. A mounting section of the piezoelectric ultrasonic monitor,
302. The mounting section of the probe arm,
303. A pull rod mounting section is arranged on the pull rod,
4. A limit spring of the probe seat,
5. The probe arm is provided with a limiting spring,
6. The pull rod is provided with a pull rod,
7. A probe seat rotating shaft,
8. A probe arm rotating shaft,
9. A pull rod rotating shaft.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a piezoelectric ultrasonic detection probe system for pipeline detection, where the piezoelectric ultrasonic detection probe system includes a plurality of probes, and further, the probe system further includes: probe seat 1, probe arm 2, base 3, 2 probe seat spacing springs 4, probe arm spacing spring 5, pull rod 6, probe seat pivot 7, probe arm pivot 8, pull rod pivot 9. Wherein a plurality of probes are mounted on the probe mount 1.
The probe seat 1 is rotatably connected with the front end of the probe arm 2 through a probe seat rotating shaft 7, and 2 probe seat limiting springs 4 are symmetrically arranged on two sides of the probe arm 2, and two ends of the probe seat limiting springs are respectively fixed on the probe seat 1 and the probe arm 2 and used for providing pretightening force for the probe seat 1 so as to limit the probe seat 1 in a preset stroke.
The probe arm 2 is fixed to the base 3 by a probe arm rotation shaft 8 and is rotatable within a predetermined angle. The rear end of the probe arm 2 is rotatably connected with the pull rod 6 through a pull rod rotating shaft 9, and the probe arm limiting spring 5 is sleeved on the pull rod 6 and used for providing pretightening force for the probe arm 2 so as to limit the probe arm 2 in a preset stroke.
The piezoelectric ultrasonic detection probe system provided by the embodiment of the invention is suitable for detecting long-distance and medium-caliber high-pressure conveying pipelines conveying oil, water and other mediums, and the probe system can limit the oil and the water in a preset stroke by adopting the rotatable probe seat 1 and the probe arm 2 and using the limiting spring.
It will be appreciated that the size of the piezoelectric ultrasonic detection probe system provided in the embodiments of the present invention is preferably capable of freely entering and exiting the pipeline, and the embodiments of the present invention are not limited in detail herein.
Specifically, in the piezoelectric ultrasonic detection probe system provided by the embodiment of the invention, as shown in fig. 1, fig. 2 and fig. 4, a probe seat 1 comprises a square probe seat body 101, a probe seat mounting frame 102 and a wear-resistant ceramic strip 103. The opposite side walls of the probe seat mounting frame 102 are respectively provided with a sliding groove, the side parts of the probe seat body 101 are embedded into the sliding grooves, and the probe seat body 101 is fixed on the probe seat mounting frame 102 by using screws 106; the upper ends of the opposite side walls of the probe seat mounting frame 102 are provided with wear-resistant ceramic strips 103 for providing detection lift-off values for a plurality of probes.
According to the embodiment of the invention, the probe seat body 101 is embedded into the probe seat mounting frame 102, so that the shape of the probe seat body 101 is controlled to be in a simple local structure to be suitable for the inner wall of a pipeline, and meanwhile, the probe seat mounting frame 102 is used as a connecting mechanism to be rotatably connected with the probe arm 2. On this basis, wear-resistant ceramic strips 103 can be symmetrically arranged at the upper ends of the opposite side walls of the probe seat mounting frame 102 respectively, so as to provide detection lift-off values for a plurality of probes mounted on the probe seat body 101, namely, ensure a certain safety monitoring distance between the probes and the inner wall of the pipeline. Grooves for accommodating the ceramic strips are formed in the upper ends of the opposite side walls of the probe seat mounting frame 102, so that the wear-resistant ceramic strips 103 are correspondingly arranged in the grooves and positioned on the same horizontal plane with the probes. It can be appreciated that, although on the same horizontal plane with a plurality of probes, the top of the wear-resistant ceramic strip 103 is higher than the specific distance of the top of the probes, so that the detection lift-off value required by the probes under the working condition is effectively ensured, the contact area between the probe system and the inner wall of the pipeline can be effectively reduced, and the friction and wear phenomena of the probe system are further reduced. Further, the wear-resistant ceramic strip 103 may have a block shape, a rod shape, a cone shape, and preferably a rod shape. Of course, other wear resistant insulating materials may be used in place of the wear resistant ceramic strips 103.
More specifically, the probe mount mounting frame 102 includes: the square frame 1021 and the connecting piece 1022 are closed on three sides, and the square frame 1021 comprises a first side surface, a rear end surface and a second side surface which are sequentially connected. The sliding grooves are arranged in the inner walls of the first side face and the second side face, and the probe seat body 101 is embedded into the probe seat mounting frame 102 through the two sliding grooves, so that the probe seat body 101 can be mounted and dismounted conveniently. After the probe holder body 101 is inserted into the slide slot in the probe holder mount 102, the probe holder body 101 and the probe holder mount 102 are secured together using screws 106, such as cross countersunk screws.
Further, a connecting member 1022 is fixed to an outer wall of the rear end face, and a front end of the probe arm 2 is inserted into the connecting member 1022, and a probe holder rotating shaft 7 is passed through the front end of the probe arm 2 and the connecting member 1022 to rotatably connect the probe arm 2 with the probe holder mounting frame 102. Specifically, the connection member 1022 is composed of a square portion fixed to the rear end face of the probe holder mounting frame 102 and a wedge portion, in which the probe holder rotation shaft 7 passes through the front end of the probe arm 2 and the square portion of the connection member 1022 to rotatably connect the probe arm 2 with the probe holder mounting frame 102.
Further, both ends of the probe holder limiting spring 4 are connected with the side wall of the connecting piece 1022 and the side wall of the probe arm 2, respectively, so as to limit the probe holder 1 in a predetermined stroke. For example, a hanging table may be respectively disposed on the outer side walls of the wedge-shaped portion of the connecting member 1022, and a hanging table may be also disposed on the outer side walls of the opposite side walls of the probe arm 2, and an extension spring is used as the probe seat limiting spring 4, so that the hooks at two ends of the probe seat limiting spring 4 hook the hanging table on the wedge-shaped portion of the connecting member 1022 and the hanging table on the probe arm 2, so as to ensure that the probe seat 1 is limited in a predetermined stroke, so that the probe seat 1 can rotate within a certain angle, and simultaneously ensure sufficient stability, and facilitate the detection operation of the probe.
Specifically, in the embodiment of the invention, a plurality of probe mounting holes 104 are arranged on the probe seat body 101, and each probe mounting hole 104 is internally provided with an elastic retainer ring 105, so that the probe seat can be used for clamping a probe, and the probe seat is convenient to mount and dismount. As a preferred way, the probe seat body 101 is provided with 8 probe mounting holes 104,8, and the probe mounting holes 104 are arranged in 3 rows along the axial direction of the pipeline to be detected, and are uniformly arrayed in an equal angle along the circumferential direction of the pipeline, and triangles formed by the adjacent 3 probe mounting holes 104 are kept consistent (i.e. each probe is uniformly arrayed in an equal angle, as shown in fig. 5, wherein the probe mounting holes 104 are arranged according to the sequence of A, B, C, D, E, F, G, H, so that the probe seat can be realized, and when a plurality of probe seats are simultaneously used, the probe mounting holes on the probe seat can uniformly cover the inner wall of the pipeline along the circumferential direction of the pipeline, thereby avoiding overlapping coverage or omission phenomenon in the circumferential direction of the pipeline in the probe detection process. By arranging as above, an effective coverage of the inner wall of the pipe in a specific space is achieved to the maximum extent.
Further, in the piezoelectric ultrasonic detection probe system provided by the embodiment of the invention, the base 3 comprises a piezoelectric ultrasonic detector mounting section 301, a probe arm mounting section 302 and a pull rod mounting section 303 which are sequentially connected. Wherein, the piezoelectric ultrasonic detector mounting section 301 is provided with 2 first through holes for mounting the piezoelectric ultrasonic detector; a slit is formed in the middle of the probe arm mounting section 302 and used for accommodating the probe arm 2, and the probe arm rotating shaft 8 penetrates through the probe arm 2 and the probe arm mounting section 302 so that the probe arm 2 can rotate within a preset angle; the lever mounting section 303 is provided with a second through hole for passing the front end of the lever 6, and the rotation shaft of the lever 6 passes through the front end of the lever 6 and the rear end of the probe arm 2 to limit the probe arm 2 within a predetermined stroke. By arranging as described above, the probe arm 2 can be rotated within a certain angle and stable is ensured, while the probe holder 1 can be rotated within a certain angle and kept stable (the displacement process of the probe system can be seen in fig. 6, for example, the probe holder 1 can be rotated from the position i to the position ii under the premise of a certain pretightening force and kept stable at the position ii, and accordingly, the probe arm 2 can be rotated accordingly, so that the probe can be ensured to be always perpendicular to the inner wall of the pipe when facing the pipe with a deformed structure. It will be appreciated that the probe arm 2 is at an angle to the tie rod 6, i.e. the tie rod 6 is oriented horizontally, while the probe arm 2 is inclined in a vertical direction so that the probe system can freely enter the interior of the pipe.
In the embodiment of the invention, the probe arm limiting spring 5 is preferably a compression spring, so that the body of the probe arm limiting spring 5 is sleeved on the pull rod 6, and two end parts are respectively fixed at the outer part of the pull rod mounting section 303 and the rear end of the pull rod 6. When the probe arm 2 rotates, the pull rod 6 is driven to move along with the probe arm, so that the probe arm limiting spring 5 is compressed, the pre-tightening force is provided for the probe arm 2, and the probe arm 2 is ensured to be stable in a preset stroke.
Further, in order to improve the service life of the piezoelectric ultrasonic detection probe system provided by the embodiment of the invention, the probe seat 1, the probe arm 2, the base 3, the pull rod 6, the probe seat rotating shaft 7, the probe arm rotating shaft 8 and the pull rod rotating shaft 9 are all made of metal alloy, and preferably are of stainless steel structures.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the invention, but rather to cover any modifications, equivalents, improvements or the like within the spirit and scope of the present invention.
Claims (3)
1. A piezoelectric ultrasonic inspection probe system for pipe inspection comprising a plurality of probes, the probe system further comprising: the probe comprises a probe seat, a probe arm, a base, 2 probe seat limiting springs, a probe arm limiting spring, a pull rod, a probe seat rotating shaft, a probe arm rotating shaft and a pull rod rotating shaft, wherein a plurality of probes are arranged on the probe seat;
The probe seat is rotatably connected with the front end of the probe arm through the probe seat rotating shaft, 2 probe seat limiting springs are symmetrically arranged on two sides of the probe arm, two ends of the probe seat limiting springs are respectively fixed on the probe seat and the probe arm and used for providing pretightening force for the probe seat so as to limit the probe seat in a preset stroke, wherein the probe seat comprises a square probe seat body, a probe seat mounting frame and wear-resistant ceramic strips; sliding grooves are formed in the opposite side walls of the probe seat mounting frame, the side parts of the probe seat body are embedded into the sliding grooves, and the probe seat body is fixed on the probe seat mounting frame through screws; the upper ends of the opposite side walls of the probe seat mounting frame are respectively provided with a groove used for accommodating the wear-resistant ceramic strips, the wear-resistant ceramic strips are correspondingly arranged in the grooves and are positioned on the same horizontal plane with the probes, and the tops of the wear-resistant ceramic strips are higher than the tops of the probes by a specific distance and are used for providing detection lift-off values for the probes;
The probe seat mounting frame comprises a square frame body with three closed surfaces and a connecting piece, and the square frame body comprises a first side face, a rear end face and a second side face which are sequentially connected; the sliding groove is arranged in the inner walls of the first side face and the second side face, and the connecting piece is fixed on the outer wall of the rear end face; the front end of the probe arm extends into the connecting piece, and the probe seat rotating shaft penetrates through the front end of the probe arm and the connecting piece so that the probe arm and the probe seat mounting frame can be rotatably connected; the two ends of the probe seat limiting spring are respectively connected with the side wall of the connecting piece and the side wall of the probe arm so as to limit the probe seat in a preset stroke;
The probe arm is fixed on the base through the probe arm rotating shaft and can rotate in a preset angle, the rear end of the probe arm is rotatably connected with the pull rod through the pull rod rotating shaft, the body of the probe arm limiting spring is sleeved on the pull rod, and two end parts are respectively fixed on the outer part of the pull rod mounting section and the rear end of the pull rod and used for providing a pretightening force for the probe arm so as to limit the probe arm in a preset stroke; the base comprises a piezoelectric ultrasonic detector mounting section, a probe arm mounting section and a pull rod mounting section which are connected in sequence; the piezoelectric ultrasonic detector mounting section is provided with 2 first through holes for mounting the piezoelectric ultrasonic detector; the middle part of the probe arm installation section is provided with a slit for accommodating the probe arm, and the probe arm rotating shaft penetrates through the probe arm and the probe arm installation section so that the probe arm can rotate within a preset angle; the pull rod mounting section is provided with a second through hole for enabling the front end of the pull rod to pass through, and the pull rod rotating shaft passes through the front end of the pull rod and the rear end of the probe arm so as to limit the probe arm in a preset stroke;
the probe seat body is provided with 8 probe mounting holes, the 8 probe mounting holes are arranged in 3 rows along the axial direction of a pipeline to be detected, and are uniformly arrayed in equal angles in the circumferential direction, and triangles formed by the adjacent 3 probe mounting holes are consistent;
An elastic retainer ring is arranged in the probe mounting hole and used for clamping the probe;
The probe seat limiting spring is an extension spring, and hooks at two ends of the probe seat limiting spring hook a hanging table on a wedge-shaped part of a connecting piece of the probe seat and a hanging table on the probe arm respectively.
2. The piezoelectric ultrasonic detection probe system of claim 1, wherein the probe arm limit spring is a compression spring.
3. The piezoelectric ultrasonic testing probe system of any one of claims 1-2, wherein the probe mount, probe arm, base, tie rod, probe mount shaft, probe arm shaft, and tie rod shaft are all made of metal alloys.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510965224.0A CN106896158B (en) | 2015-12-21 | 2015-12-21 | Piezoelectric ultrasonic detection probe system for pipeline detection |
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| CN201510965224.0A CN106896158B (en) | 2015-12-21 | 2015-12-21 | Piezoelectric ultrasonic detection probe system for pipeline detection |
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| CN106896158B true CN106896158B (en) | 2024-05-28 |
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| CN107741460B (en) * | 2017-11-29 | 2024-06-04 | 沈阳工业大学 | Transducer follow-up mechanical device structure of detector in electromagnetic ultrasonic pipeline |
| CN110220972A (en) * | 2019-05-25 | 2019-09-10 | 中海油能源发展股份有限公司 | A kind of long distance pipeline piezoelectric supersonic wave inspection internal detector |
| US11346489B2 (en) | 2019-09-30 | 2022-05-31 | Saudi Arabian Oil Company | Passive alignment mechanism for off-centered probe deployment |
| CN112756347A (en) * | 2019-11-04 | 2021-05-07 | 中国石油天然气集团有限公司 | Cleaning equipment |
| CN114623954A (en) * | 2020-12-10 | 2022-06-14 | 中国石油天然气集团有限公司 | Internal detection device and equipment for detecting stress of oil and gas pipeline |
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