CN210123414U - Piezoelectric ultrasonic internal detection probe assembly for long-distance pipeline - Google Patents
Piezoelectric ultrasonic internal detection probe assembly for long-distance pipeline Download PDFInfo
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- CN210123414U CN210123414U CN201920311184.1U CN201920311184U CN210123414U CN 210123414 U CN210123414 U CN 210123414U CN 201920311184 U CN201920311184 U CN 201920311184U CN 210123414 U CN210123414 U CN 210123414U
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Abstract
The utility model relates to a piezoelectric ultrasonic internal detection probe assembly of a long-distance pipeline, which comprises a plurality of strip-shaped probe frames which are uniformly arranged along the circumferential direction, wherein each probe frame comprises two corrosion detection probes and two crack detection probes, the probe frames are sequentially arranged at equal intervals in the length direction of the probe frame, and the incident surfaces of the probe frames face the inner wall of the pipeline; the length direction of the probe frame has a certain inclination angle relative to the axial direction of the pipeline, and the circumferential areas covered by the adjacent probe groups have a certain degree of overlap. The utility model discloses possess simultaneously corrosion detection and crackle detectability, improved detection efficiency greatly.
Description
Technical Field
The utility model belongs to the technical field of nondestructive test, especially, relate to a test probe subassembly in piezoelectricity ultrasonic wave of long distance pipeline.
Background
Long distance pipes have very wide applications, such as: with the development of the oil and gas industry and the increasing industrial energy demand, the oil and gas transportation pipelines in China develop rapidly, and long-distance pipelines become important transportation means for transporting oil, gas and other energy.
The long distance pipeline is because the peripheral geographical environment of pipeline can lead to the fact the corruption to the pipe wall at the operation in-process, when corroding to certain stage, thereby the pipeline can cause the stress corrosion production crackle of corrosion zone under external and pipeline internal pressure effect, and the crackle on the pipe wall is extended to certain extent and will be caused revealing, causes the threat to the national property and the life safety around the pipeline. In order to ensure the operation safety of the long-distance pipeline, the pipeline is required to be periodically detected so as to find problems in time, measures are taken to prevent major accidents, and the corrosion and the cracks of the pipeline wall are determined and maintained in time to become necessary measures for pipeline maintenance.
Because most of the long-distance pipeline is buried underground, operators on the ground are difficult to contact the pipeline, so that the conventional detection method is difficult to realize the regular inspection of the pipeline, and the main application tool for the regular detection of the long-distance pipeline is an in-pipeline detection device or a pipeline pig in common. The detection device is a closed system which is similar to a space capsule, can automatically detect and store data and is powered by a battery, and is internally provided with an electronic capsule probe device and a data storage unit. The system is pushed by the flowing of a pipeline conveying medium (oil gas) in the pipeline, the pipeline passing through the system is detected in an all-directional mode, and the device to be detected runs for a certain distance (generally, the distance between two sub-conveying stations is larger than or equal to 100 kilometers) in the pipeline and then is taken out from the sub-conveying stations at the downstream. The data stored by the detection device are read on the ground by service personnel and processed, so that the basic detection condition of the passing pipeline is given and the result is analyzed.
The detection In the pipeline mainly comprises three types, the first type is a pipeline magnetic leakage detection device, and the detection can be seen In a mechanical system of a high-definition pipeline magnetic leakage detection device (application number 200710118862.4) and an In-line Inspection Tool (US20180106762A 1); the second is a pipeline electromagnetic ultrasonic detection device, which can be seen In 'In-line electrophoresis tool for pipeline integration testing (US8479577B 2)'; the third is a piezoelectric ultrasonic internal detection device. The piezoelectric ultrasonic internal detection device is mainly used for detecting pipelines for long-distance conveying of liquid media (mainly crude oil or product oil), and comprises an ultrasonic corrosion internal detection device and an ultrasonic crack internal detection device.
The ultrasonic detection method for petroleum pipelines and a robot for detection (application number 200510130338.X) disclose the technology of an ultrasonic probe of a rotary probe for real-time detection in the pipelines, but the method can be implemented only under the condition of extremely low detection speed because the selection and grabbing speed cannot keep up with the moving speed of a detection device, and the amplitude of an ultrasonic signal is influenced because the rotary probe has a centering problem with the pipe wall due to vibration and the like. "Apparatus for and Method of Pipeline interpretation (US20130025370A 1)", discloses the grouping and combination of probes into a square probe shoe. In the method, the probes are directly incident when corrosion detection is carried out, so that no influence is caused among the probes. However, in real-time crack detection, because the probes adopt oblique incidence, if the probes are still gathered in such a small space, mutual interference of sound fields among the probes can be caused. Meanwhile, when the downstream ultrasonic detection device performs detection, an operator needs to respectively send an ultrasonic corrosion internal detection device and an ultrasonic crack internal detection device to the pipeline to complete all-dimensional detection of the pipeline, namely, the detection needs to be completed twice.
Disclosure of Invention
In view of the above shortcomings in the prior art, an object of the present invention is to provide a novel piezoelectric ultrasonic internal detection probe assembly for long-distance pipelines, which is used for solving the problems existing in the piezoelectric ultrasonic internal detection of long-distance pipelines in the prior art. The utility model discloses collect corrosion detection and crackle detection function in an organic whole, once detect can accomplish the detection of corruption and crackle. The utility model discloses the technical scheme who adopts as follows:
a piezoelectric ultrasonic internal inspection probe assembly for long distance pipes, comprising: the device comprises a plurality of strip-shaped probe frames which are uniformly arranged along the circumferential direction, wherein one ends of the probe frames are connected into a whole through universal joints, a plurality of probe groups are uniformly arranged on each probe frame, each probe group consists of two corrosion detection probes and two crack detection probes, the probe groups are sequentially arranged at equal intervals in the front and back direction of the length direction of the probe frame, and the incidence surfaces of the probe groups face the inner wall of a pipeline; the length direction of each probe holder has a certain inclination angle relative to the axial direction of the pipeline.
Preferably, the circumferential areas covered by adjacent groups of probes overlap to some extent.
Preferably, the number of the probe frames and the probe groups in the probe assembly is detected, and is determined according to different diameters of pipelines. The probe frame is made of flexible materials and has certain elasticity.
Preferably, the two crack detection probes in each probe group are symmetrically arranged along the normal direction of the pipe wall and respectively emit ultrasonic waves to the same point on the pipe wall.
Preferably, holes are formed in the plane of the probe holder, and the probe group is plugged into the holes in the probe holder for fixing.
The utility model has the advantages that:
1) the detection probe assembly consists of probe frames which are uniformly arranged along the circumferential direction, and probe groups consisting of corrosion detection probes and crack detection probes are distributed on the probe frames at equal intervals, so that the detection device has the corrosion detection and crack detection capabilities at the same time, the detection of the corrosion and the crack of the pipeline can be completed through one-time detection, and the detection efficiency is greatly improved.
2) The utility model discloses effectively overcome all kinds of shortcomings in the prior art and had high industry value.
Drawings
Fig. 1 is a schematic perspective view of a detection probe assembly of the present invention;
FIG. 2 is a schematic view of a single probe holder of the present invention arranged obliquely with respect to the axis of the pipeline;
FIG. 3 is a schematic view of a probe set comprising a wall thickness corrosion probe and a crack detection probe according to the present invention;
fig. 4 is a schematic diagram of the crack detection probes of the present invention arranged in two opposite directions.
In the figure, 1-probe holder, 2-probe group, 3-crack detection probe, 4-corrosion detection probe.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The following describes embodiments of the present invention with reference to the drawings. A piezoelectric ultrasonic internal inspection probe assembly for long distance pipes, comprising: the corrosion detection device comprises a plurality of strip-shaped probe frames 1 which are uniformly arranged along the circumferential direction, wherein the probe frames 1 are connected into a whole at one end through a universal joint, a plurality of probe groups 2 consisting of two corrosion detection probes 4 and two crack detection probes 3 are uniformly arranged on each probe frame 1, the probe groups 2 are sequentially arranged in the length direction of the probe frame 1 at equal intervals, and the incident surfaces of the probe groups 2 face the inner wall of a pipeline. The length direction of each probe frame 1 has certain angle of inclination for the pipeline axis direction to guarantee that all probe groups 2 are all in different circumferential positions relative to the pipeline, all probe groups 2 combine together to constitute the detection full coverage to the pipe wall.
As shown in fig. 1, for the utility model discloses a probe frame is along circumferencial direction evenly distributed's inspection probe subassembly stereogram, as shown in fig. 2, for the utility model discloses a single probe frame is schematic diagram of arranging to the relative pipeline axis slant. The number of the probe frames 1 and the number of the probe groups 2 in the probe assembly are detected, and are determined according to different diameters of pipelines, so that the full coverage in the pipelines can be realized. The circumferential areas covered by adjacent probe sets 2 overlap to some extent to ensure defect detection rates. Fig. 3 is a schematic diagram of a probe set 2 composed of a wall thickness corrosion detecting probe and a crack detecting probe according to the present invention.
Each probe holder 1 is made of flexible materials and has certain elasticity, so that each probe holder 1 can be tightly attached to the inner wall of a pipeline and realize automatic bending of a probe assembly at the elbow part of the pipeline. The flexible probe frame 1 can ensure that the probe group 2 keeps relatively stable lifting distance and incidence angle with the inner wall of the pipeline, so that the ultrasonic waves are incident on the inner wall of the pipeline.
The corrosion detection probe 4 and the crack detection probe 3 are respectively connected with a corrosion detection module and a crack detection module in an electronic cabin of the detection device, so that the detection device has corrosion detection capability and crack detection capability at the same time, and the detection device can complete pipeline corrosion detection and crack detection only by one time;
the two crack detection probes 3 in each probe group 2 are symmetrically arranged along the normal direction of the pipe wall and respectively transmit ultrasonic waves to the same point on the pipe wall.
In this embodiment, a hole is formed in the plane of the probe holder 1, and the probe group 2 is inserted into the hole in the probe holder 1 and fixed.
When concrete detection, will the utility model discloses a test probe subassembly links to each other with electron cabin and battery compartment and constitutes one set of complete piezoelectricity ultrasonic wave internal detection device, and it includes:
the electronic cabin, battery compartment and probe subassembly, probe subassembly is formed by the combination of a plurality of probe frame 1, adopts the universal joint to link to each other between a plurality of probe frame 1 and constitutes the detection probe subassembly.
The corrosion detection module and the crack detection module drive the corrosion detection probe and the crack detection probe to emit wave beams which are directly incident on the pipe wall of the pipeline, and the pipe wall is subjected to full coverage detection in the circumferential direction.
The detection device moves in the pipeline under the pushing of the medium in the detection process. In the process of advancing of the detection device, the encoder on the detection device fixedly sends pulses to the electronic cabin at regular intervals of walking distance, the electronic cabin detects once when receiving encoder signals once, all detection probes on the detection probe assembly transmit ultrasonic pulses for detection once, and detection results are stored in the storage module.
The utility model discloses a along circumferencial direction align to grid's probe frame, and every probe frame equidistance distribution piezoelectricity ultrasonic detection probe group, every probe group comprises two corrosion detection probe and two crack detection probe. Each probe group covers a certain circumferential area, and all the probe groups together form the full-coverage detection of the circumferential direction of the pipeline. As the detection device advances along the axis direction of the pipeline, the probe group completes full-coverage detection on the pipeline passing through the detection device in the advancing process.
In this embodiment, the utility model discloses a concrete connection mode and the data interaction mode of test probe subassembly and electron cabin, battery cabin, corruption detection module and crackle detection module, data record and storage module to and the storage and the processing mode of testing result, all are prior art well-known in the art, can realize according to conventional technical means the utility model discloses, no detailed description herein.
As the detection device travels, the distance between the vibrating probe of the detection device and the inner surface of the pipe, i.e., the lift distance, changes. The time of arrival of the reflected echo changes as the lift-off distance changes. The detection window shutter provided by the data processing unit is accordingly changed. For the corrosion detection probe, the probe directly enters the pipe wall to receive stable interfacial waves, and a detection window gate is correspondingly arranged according to the arrival time of the interfacial waves. In addition, because the crack detection probe obliquely enters the ultrasonic wave to the pipe wall, the interfacial wave reflected from the pipe wall belongs to diffuse reflection, the amplitude and the shape are unstable, and the crack detection probe is not favorable for being used as a judgment basis for the lifting distance between the pipe wall and the crack detection probe. Therefore, the utility model discloses a method of two crack detection probes relative incidence has been adopted. Each probe can receive interface reflected waves transmitted from the other probe, the amplitude and the shape of the reflected waves are stable, the processing problem of tracking and detecting the gate is solved, and the stability of crack detection is greatly improved. As shown in fig. 4, the two crack detection probes of the present invention are arranged in opposite directions.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (4)
1. Long distance pipeline piezoelectricity ultrasonic wave internal detection probe subassembly, its characterized in that includes: the device comprises a plurality of strip-shaped probe frames which are uniformly arranged along the circumferential direction, wherein one ends of the probe frames are connected into a whole through universal joints, a plurality of probe groups are sequentially and uniformly arranged in the length direction of each probe frame at equal intervals from front to back, each probe group consists of two corrosion detection probes and two crack detection probes, and the incident surface of each probe group faces the inner wall of a pipeline;
the length direction of each probe holder has a certain inclination angle relative to the axial direction of the pipeline.
2. The long-reach pipeline piezoelectric ultrasonic in-vivo inspection probe assembly of claim 1, wherein circumferential areas covered by adjacent probe sets overlap to some extent.
3. The long-distance pipeline piezoelectric ultrasonic internal detection probe assembly as claimed in any one of claims 1-2, wherein the two crack detection probes in each probe group are symmetrically arranged along the normal direction of the pipeline wall and respectively emit ultrasonic waves to the same point on the pipeline wall.
4. The long distance pipeline piezoelectric ultrasonic in-vivo inspection probe assembly of claim 3, wherein holes are formed in the plane of the probe holder, and the probe assembly is inserted into the holes in the probe holder for fixation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920311184.1U CN210123414U (en) | 2019-03-12 | 2019-03-12 | Piezoelectric ultrasonic internal detection probe assembly for long-distance pipeline |
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| CN201920311184.1U CN210123414U (en) | 2019-03-12 | 2019-03-12 | Piezoelectric ultrasonic internal detection probe assembly for long-distance pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946375A (en) * | 2019-03-12 | 2019-06-28 | 山东省特种设备检验研究院有限公司 | Detection probe component and detection method in long-distance pipe piezoelectric ultrasonic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946375A (en) * | 2019-03-12 | 2019-06-28 | 山东省特种设备检验研究院有限公司 | Detection probe component and detection method in long-distance pipe piezoelectric ultrasonic |
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Address after: No. 939, Tianchen Road, Ji'nan high tech Zone, Shandong, Shandong Patentee after: Shandong special equipment inspection and Research Institute Group Co.,Ltd. Patentee after: SHANDONG SPECIAL EQUIPMENT INSPECTION INSTITUTE LUTE INSPECTION AND TESTING CO.,LTD. Address before: No. 939, Tianchen Road, Ji'nan high tech Zone, Shandong, Shandong Patentee before: SHANDONG SPECIAL EQUIPMENT INSPECTION INSTITUTE CO.,LTD. Patentee before: SHANDONG SPECIAL EQUIPMENT INSPECTION INSTITUTE LUTE INSPECTION AND TESTING CO.,LTD. |
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