CN112709936A - Probe follow-up structure for detection in micro pipeline - Google Patents
Probe follow-up structure for detection in micro pipeline Download PDFInfo
- Publication number
- CN112709936A CN112709936A CN202011625672.3A CN202011625672A CN112709936A CN 112709936 A CN112709936 A CN 112709936A CN 202011625672 A CN202011625672 A CN 202011625672A CN 112709936 A CN112709936 A CN 112709936A
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- pipeline
- probe
- follow
- support arm
- connecting sleeve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
Abstract
The invention discloses a probe follow-up structure for detecting in a micro pipeline, which comprises a flexible connecting part and a follow-up mechanism part, wherein the flexible connecting part and the follow-up mechanism part are connected through a connecting component; the servo mechanism part comprises a front rigid connecting sleeve and a rear rigid connecting sleeve which are arranged along the axial direction of the pipeline to be detected, a spring assembly and a plurality of rotatable support arm groups are arranged between the front rigid connecting sleeve and the rear rigid connecting sleeve, and each support arm group is provided with a probe assembly corresponding to the pipeline to be detected; the flexible connecting part is provided with a power port assembly at one end far away from the follow-up mechanism part. The angle of the ultrasonic detection probe in the follow-up process is always perpendicular to the pipe wall, so that the passing performance and the detection stability of the follow-up structure are improved, and the working quality and the working efficiency are improved; and the whole structure of the structure can be deformed to adapt to the change of the internal space and the shape of the pipeline, and the full-coverage accurate scanning detection of the whole circumference of the pipeline in the rotating, advancing and turning processes of the ultrasonic detection probe is realized.
Description
Technical Field
The invention belongs to the technical field of pipeline ultrasonic detection, and particularly relates to a probe follow-up structure for detecting in a micro pipeline.
Background
The pipeline is widely applied to various important industrial fields such as ships, petrochemicals, nuclear energy, electric power and the like as an economic, efficient and safe material conveying means. Along with the increase of service time, the pipeline can be corroded by the action of internal and external media, and pipeline leakage can be caused in serious cases, even major safety accidents occur, and huge hidden dangers are brought to the safe operation of equipment.
The traditional ultrasonic pipeline corrosion detection adopts a single probe to perform local single-point detection outside a pipeline, has a small detection range, cannot obtain the overall corrosion condition of the pipeline, and has limited detection capability. Meanwhile, the external space of the pipeline is complex, which causes great difficulty to the implementation of pipeline corrosion detection, and sometimes even external detection cannot be performed. Especially in the field of micro pipeline corrosion internal detection, due to the small diameter and large curvature of the micro pipeline, the requirement of ultrasonic probe directivity for corrosion internal detection by utilizing ultrasound is strict, if the emitted sound beam of the probe cannot be kept perpendicular to the tangent of the wall part of the pipeline, the detection precision can be influenced, even the detection cannot be caused, at present, the probe structure for pipeline ultrasonic internal detection has the problems of low precision of ultrasonic internal detection, detection omission and the like due to the fact that the stability is insufficient, particularly the direction of the probe when the probe passes through a pipeline elbow cannot be ensured.
Disclosure of Invention
The invention aims to provide a probe follow-up structure for detecting in a tiny pipeline, which solves the problems of low ultrasonic detection precision and missed detection caused by insufficient stability of the conventional probe structure for ultrasonic internal detection of the pipeline.
The technical scheme adopted by the invention is that,
a probe follow-up structure for detecting in a micro pipeline comprises a flexible connecting part and a follow-up mechanism part which are connected through a connecting component;
the servo mechanism part comprises a rigid connecting sleeve set arranged along the axial direction of the pipeline to be detected, the rigid connecting sleeve set comprises a front rigid connecting sleeve and a rear rigid connecting sleeve, a spring assembly and a plurality of rotatable support arm groups are arranged between the front rigid connecting sleeve and the rear rigid connecting sleeve, and each support arm group is provided with a probe assembly corresponding to the pipeline to be detected;
the flexible connecting part is provided with a power port assembly at one end far away from the follow-up mechanism part, and under the condition that the power port assembly is connected with the pipeline detector main body, the flexible connecting part drives the follow-up mechanism part to move so as to carry out ultrasonic detection on a pipeline to be detected.
The present invention is also characterized in that,
the flexible connection part comprises a flexible connector, the flexible connector and the connector component are of an integrated structure, the connecting component comprises a connecting steel seat, one end of the connecting steel seat is connected with the flexible connector through a rear end connecting bolt, and the other end of the connecting steel seat is connected with a front rigid connecting sleeve.
The connector component comprises a power connecting seat, the power connecting seat is provided with a power connector, and the power connecting seat is provided with a front end connecting bolt for connecting the pipeline detector main body to be connected.
Each support arm group comprises a front support arm and a rear support arm, one end of the front support arm is connected with the front rigid connecting sleeve through a front rotating shaft, the other end of the front support arm is connected with one end of the rear support arm through a support arm rotating shaft, and the other end of the rear support arm is connected with the rear rigid connecting sleeve through a rear rotating shaft; wherein, the support arm rotating shaft is arranged on the probe assembly.
The probe assembly comprises an ultrasonic probe fixing frame, and the ultrasonic probe fixing frame is connected with the buffer assemblies through fixing bolts at two ends in the axial direction of the pipeline to be detected respectively.
The buffering assembly comprises a ball fixing seat, a ball is arranged in the ball fixing seat, and the ball rotates in the ball fixing seat through friction with a pipe wall of the pipeline to be detected under the condition that the probe follow-up structure moves along the pipeline to be detected.
The spring assembly comprises a spring, a front spring clamping hole is formed in one end, corresponding to the spring, of the front rigid connecting sleeve, a rear spring clamping hole is formed in the other end, corresponding to the spring, of the rear rigid connecting sleeve, two ends of the spring are correspondingly arranged in the front spring clamping hole and the rear spring clamping hole, the spring is flexibly controlled through a supporting arm group under the condition that the probe follow-up structure moves along the pipeline to be detected, and therefore the probe assembly and the angle of the pipeline to be detected are fixed.
The flexible connecting part is made of polyurethane material.
The invention has the beneficial effects that: the probe follow-up structure for the detection in the tiny pipeline has the advantages that the whole structure can be deformed to adapt to space change by fixing and rotating the ultrasonic detection probe, so that the probe rotates along with a motor of a detector and is vertical to the pipe wall in the ultrasonic detection process of the pipeline, the full-coverage scanning detection of the ultrasonic detection probe on the whole circumference of the pipeline is realized, and the precision of the corrosion ultrasonic internal detection is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a probe follow-up structure for detection in a micro pipeline according to the present invention;
FIG. 2 is a schematic structural diagram of a probe assembly in a probe follow-up structure for tiny pipeline internal inspection according to the present invention.
In the figure, 1, a front end connecting bolt, 2, a flexible connecting body, 3, a connecting steel seat, 4, a front rigid connecting sleeve, 5, a front supporting arm, 6, an ultrasonic probe fixing frame, 7, a ball fixing seat, 8, a ball, 9, a front connecting pin hole, 10, a front spring clamping hole, 11, a spring, 12, a front rotating shaft, 13, a rear supporting arm, 14, a rear connecting pin hole, 15, a rear rotating shaft, 16, a rear rigid connecting sleeve, 17, a fixing bolt, 18, a rear spring clamping hole, 19, a power connecting port, 20, a power connecting seat, 21, a rear end connecting bolt and 22, supporting arm rotating shafts.
Detailed Description
The following detailed description of the probe follow-up structure for detecting in a micro pipeline according to the present invention is provided with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 2, a probe follow-up structure for detection in a micro pipeline comprises a flexible connecting part and a follow-up mechanism part which are connected through a connecting component;
the servo mechanism part comprises a rigid connecting sleeve set arranged along the axial direction of the pipeline to be detected, the rigid connecting sleeve set comprises a front rigid connecting sleeve 4 and a rear rigid connecting sleeve 16, a spring assembly and a plurality of rotatable support arm groups are arranged between the front rigid connecting sleeve 4 and the rear rigid connecting sleeve 16, and each support arm group is provided with a probe assembly corresponding to the pipeline to be detected;
the flexible connecting part is provided with a power port assembly at one end far away from the follow-up mechanism part, and under the condition that the power port assembly is connected with the pipeline detector main body, the flexible connecting part drives the follow-up mechanism part to move so as to carry out ultrasonic detection on a pipeline to be detected.
Further, the flexible connection part comprises a flexible connection body 2, the flexible connection body 2 and the connection port assembly are of an integrated structure, the connection assembly comprises a connection steel base 3, one end of the connection steel base 3 is connected with the flexible connection body 2 through a rear end connection bolt 21, and the other end of the connection steel base 3 is connected with a front rigid connection sleeve 4.
The flexible connector 2 of the probe follow-up structure for detecting in the micro pipeline is arranged in a zigzag shape at the outer part, the zigzag shape increases the deformation capacity of the flexible connector, and the flexible connector can ensure smooth passing through by self deformation when passing through a bent pipe or a reducing pipeline. The front end and the rear end of the flexible connecting body 2 are provided with connecting holes for connecting and fixing bolts;
further, the connecting port assembly comprises a power connecting seat 20, the power connecting seat 20 is provided with a power connecting port 19, and the power connecting seat 20 is provided with a front end connecting bolt 1 for connecting the detector body of the pipeline to be connected.
Furthermore, each support arm group comprises a front support arm 5 and a rear support arm 13, one end of the front support arm 5 is connected with the front rigid connecting sleeve 4 through a front rotating shaft 12, the other end of the front support arm 5 is connected with one end of the rear support arm 13 through a support arm rotating shaft 22, and the other end of the rear support arm 13 is connected with the rear rigid connecting sleeve 16 through a rear rotating shaft 15; wherein the arm pivot 22 is disposed on the probe assembly. A stacking structure is presented between the arm groups;
further, the probe assembly comprises an ultrasonic probe fixing frame 6, and the two ends of the ultrasonic probe fixing frame 6 in the axial direction of the pipeline to be detected are respectively connected with a buffer assembly through fixing bolts 17.
Further, the buffering assembly comprises a ball fixing seat 7, a ball 8 is arranged in the ball fixing seat 7, and under the condition that the probe follow-up structure moves along the pipeline to be detected, the ball 8 rotates in the ball fixing seat 7 through friction with the pipe wall.
Further, spring unit includes spring 11, preceding rigid connection cover 4 is provided with preceding spring card hole 10 corresponding to spring 11's one end, and back rigid connection cover 16 is provided with back spring card hole 18 corresponding to spring 11's the other end, and the both ends correspondence of spring 11 sets up in preceding spring card hole 10 and back spring card hole 18, and under the follow-up structure is in the condition along waiting to detect the pipeline motion, spring 11 is through with the flexible control of armset to make probe unit and wait to detect the angle of pipeline fixed.
The invention relates to stainless steel for a connecting steel seat 3 of a probe follow-up structure for detection in a micro pipeline, which is used for connecting a flexible connector 2 and the follow-up structure, wherein the rear end of the connecting steel seat 3 is in a shaft shape and is provided with an external thread, and the end part of the connecting steel seat is provided with a front spring clamping hole 10 for connecting a spring 11.
Further, the flexible connecting part is made of polyurethane material.
The front rigid connecting sleeve 4 and the rear rigid connecting sleeve 16 for detecting in a micro pipeline are made of stainless steel, are respectively arranged at the front end and the rear end of the structure, and are respectively provided with a connecting pin hole for connecting a support arm group. The rigid connecting sleeve is integrally of a cross structure, a through hole is formed in the middle of the rigid connecting sleeve, internal threads are machined in the through hole, and the rigid connecting sleeve is fixedly connected with shaft end threads of the connecting steel seat 3 through the through hole, so that the servo mechanism is connected with and fixed to the front-end pipeline detector.
The probe follow-up structure comprises four groups of support arms, namely four front support arms 5 and four rear support arms 13, wherein the front support arms 5 and the rear support arms 13 in each group of support arm group are matched and extend through a support arm rotating shaft 22, a front rotating shaft 12, a rear rotating shaft 15 and a spring 11; the number of the probe components is four, and each support arm group supports the ultrasonic probe fixing frame 6, so that two balls 8 at the front end of the ultrasonic probe fixing frame 6 are in contact with the inner wall of the pipeline to be detected, and the angle of the ultrasonic detection probe is kept unchanged in the rotation process. Meanwhile, each support arm group forms a V shape, and the connecting part can rotate, so that the whole structure can deform to adapt to space change when bent pipes or deformed.
The ultrasonic probe fixing frame 6 is used for fixing an ultrasonic detection probe, and a through hole is formed in the ultrasonic probe fixing frame and used for embedding and fixing the probe. Two sides of the ultrasonic probe fixing frame are respectively provided with an installation lifting lug for installing the ball fixing seat 7, and the two lifting lugs and the end part three of the ultrasonic probe fixing frame 6 are at the same horizontal position so as to ensure that the angle of the ultrasonic detection probe in the follow-up process is always vertical to the pipe wall.
The ball fixing seat 7 is installed on the ultrasonic probe fixing frame 6 through a fixing bolt 17 and used for fixing the ball 8.
The front rotating shaft 12 is provided with a front connecting pin hole 9 on the front rigid connecting sleeve 4, the rear rotating shaft 15 is provided with a rear connecting pin hole 14 on the rear rigid connecting sleeve 16, and the front connecting pin hole 9 and the rear connecting pin hole 14 have basically the same structure and are used for connecting each group of front supporting arms 5 and rear supporting arms 13.
The front spring clamping hole 10 and the rear spring clamping hole 18 are basically the same in structure and are arranged at two ends of the follow-up mechanism and used for connecting the spring 11.
The supporting arm group of the follow-up mechanism is tensioned through the spring 11, so that the probe assembly at the front end of the supporting arm is in close contact with the pipe wall, and the spring 11 can stretch and retract if bent pipes or deformation occurs in the follow-up process, thereby adapting to the deformation of the whole follow-up structure and ensuring the passing performance and the detection stability of the follow-up structure.
The working process of the probe follow-up structure for detecting in the micro pipeline comprises the following steps: the whole mechanism which is assembled in advance is checked, the integrity of each component is tested, the structure is connected with a pipeline detector main body after the integrity of the structure is detected, then the structure is placed into a pipeline to be detected, the pipeline detector main body pushes the structure to move in the axial direction of the pipeline to be detected through a power part of the pipeline detector main body and drives the structure to rotate in the circumferential direction of the pipeline, meanwhile, the pipeline detector main body is matched with an ultrasonic probe to perform ultrasonic detection on the pipeline to be detected, after the detection is completed, the structure is taken out, and the site and the pipeline after the detection are arranged, so that the work of the probe follow-up structure for detecting in a tiny pipeline is completed.
According to the probe follow-up structure for detecting in a tiny pipeline, the angle of the ultrasonic detection probe in the follow-up process is ensured to be always vertical to the pipe wall, so that the passing performance and the detection stability of the follow-up structure are improved, and the working quality and the working efficiency are improved; and the whole structure of the structure can be deformed to adapt to the change of the internal space and the shape of the pipeline, and the full-coverage accurate scanning detection of the whole circumference of the pipeline in the rotating, advancing and turning processes of the ultrasonic detection probe is realized.
Claims (8)
1. A probe follow-up structure for detecting in a micro pipeline is characterized by comprising a flexible connecting part and a follow-up mechanism part which are connected through a connecting component;
the servo mechanism part comprises a rigid connecting sleeve set arranged along the axial direction of the pipeline to be detected, the rigid connecting sleeve set comprises a front rigid connecting sleeve (4) and a rear rigid connecting sleeve (16), a spring assembly and a plurality of rotatable support arm groups are arranged between the front rigid connecting sleeve (4) and the rear rigid connecting sleeve (16), and each support arm group is provided with a probe assembly corresponding to the pipeline to be detected;
the flexible connection part is provided with a power port assembly at one end far away from the follow-up mechanism part, and under the condition that the power port assembly is connected with the driving structure, the flexible connection part drives the follow-up mechanism part to move so as to carry out ultrasonic detection on the pipeline to be detected.
2. The probe follow-up structure for the detection in the micro pipeline is characterized in that the flexible connection part comprises a flexible connection body (2), the flexible connection body (2) and a connection port assembly are of an integral structure, the connection assembly comprises a connection steel base (3), one end of the connection steel base (3) is connected with the flexible connection body (2) through a rear end connection bolt (21), and the other end of the connection steel base (3) is connected with a front rigid connection sleeve (4).
3. The probe follow-up structure for detecting in a micro pipeline according to claim 1, wherein the connector assembly comprises a power connector base (20), the power connector base (20) is provided with a power connector (19), and the power connector base (20) is provided with a front end connecting bolt (1) for connecting a detector body of a pipeline to be connected.
4. The probe follow-up structure for the detection in the tiny pipeline is characterized in that each support arm group comprises a front support arm (5) and a rear support arm (13), one end of the front support arm (5) is connected with a front rigid connecting sleeve (4) through a front rotating shaft (12), the other end of the front support arm (5) is connected with one end of the rear support arm (13) through a support arm rotating shaft (22), and the other end of the rear support arm (13) is connected with a rear rigid connecting sleeve (16) through a rear rotating shaft (15); wherein, the support arm rotating shaft (22) is arranged on the probe assembly.
5. The probe follow-up structure for the detection in the micro pipeline is characterized in that the probe assembly comprises an ultrasonic probe fixing frame (6), and the two ends of the ultrasonic probe fixing frame (6) along the axial direction of the pipeline to be detected are respectively connected with a buffer assembly through fixing bolts (17).
6. The probe follow-up structure for detecting in a tiny pipeline according to claim 5, characterized in that the buffer assembly comprises a ball fixing seat (7), a ball (8) is arranged in the ball fixing seat (7), and in the case that the probe follow-up structure moves along the pipeline to be detected, the ball (8) rotates in the ball fixing seat (7) by friction with the pipe wall of the pipeline to be detected.
7. The probe follow-up structure for detecting in a tiny pipeline according to claim 1, characterized in that the spring assembly comprises a spring (11), one end of the front rigid connecting sleeve (4) corresponding to the spring (11) is provided with a front spring clamping hole (10), the other end of the rear rigid connecting sleeve (16) corresponding to the spring (11) is provided with a rear spring clamping hole (18), two ends of the spring (11) are correspondingly arranged in the front spring clamping hole (10) and the rear spring clamping hole (18), and under the condition that the probe follow-up structure moves along the pipeline to be detected, the spring (11) is flexibly controlled by a support arm set so as to fix the angle between the probe assembly and the pipeline to be detected.
8. The probe follow-up structure for tiny pipeline internal inspection according to any of claims 1-7, wherein said flexible connection part is polyurethane material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625672.3A CN112709936A (en) | 2020-12-30 | 2020-12-30 | Probe follow-up structure for detection in micro pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625672.3A CN112709936A (en) | 2020-12-30 | 2020-12-30 | Probe follow-up structure for detection in micro pipeline |
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| Publication Number | Publication Date |
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| CN112709936A true CN112709936A (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011625672.3A Pending CN112709936A (en) | 2020-12-30 | 2020-12-30 | Probe follow-up structure for detection in micro pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513658A (en) * | 2021-08-09 | 2021-10-19 | 聂海涛 | Hydraulic engineering pipe connection sealing device |
| CN114184674A (en) * | 2021-11-22 | 2022-03-15 | 沈阳工业大学 | Fixing system for ultrasonic internal detection rotary probe for corrosion of micro pipeline |
-
2020
- 2020-12-30 CN CN202011625672.3A patent/CN112709936A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513658A (en) * | 2021-08-09 | 2021-10-19 | 聂海涛 | Hydraulic engineering pipe connection sealing device |
| CN114184674A (en) * | 2021-11-22 | 2022-03-15 | 沈阳工业大学 | Fixing system for ultrasonic internal detection rotary probe for corrosion of micro pipeline |
| CN114184674B (en) * | 2021-11-22 | 2023-08-11 | 沈阳工业大学 | Rotary probe fixing system for ultrasonic internal detection of micro-pipeline corrosion |
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