CN212622395U

CN212622395U - Stable pipeline magnetic leakage detection device

Info

Publication number: CN212622395U
Application number: CN202021504219.2U
Authority: CN
Inventors: 杨玉
Original assignee: Dazhou Detec Testing Equipment Co ltd
Current assignee: Dazhou Detec Testing Equipment Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-02-26
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a stable form pipeline magnetic leakage detection device, including the barrel, install in a plurality of probes and a plurality of magnet steel of the barrel surface, a plurality of the probe is along the equidistant setting of circumference of barrel, a plurality of the magnet steel divide into two groups averagely, every group the magnet steel sets up along the circumference of barrel continuously respectively, and evenly densely distributed has the steel brush on each magnet steel, thereby forms two magnetic rings, these two magnetic rings are located respectively and arranged the probe ring both sides that form along the barrel circumference by the probe; the fixed plate is provided with at least two first through holes at intervals along the circumferential direction, the rotating plate is provided with at least two second through holes corresponding to the first through holes, when the first through holes and the second through holes are completely overlapped, the leakage flow rate is maximum, and when the first through holes and the second through holes are not completely overlapped, the leakage flow rate is zero. The utility model discloses can effectively discern defective position, the defect nature etc. of pipeline, provide accurate data guidance for the maintenance of pipeline.

Description

Stable pipeline magnetic leakage detection device

Technical Field

The utility model relates to a stable form pipeline magnetic leakage detection device belongs to the piping erection technical field.

Background

The pipeline is the important facility of transportation liquid and gas, by the wide application in feedwater, drainage, heat supply, supply gas, long distance transport oil and natural gas, agricultural irrigation, among hydraulic engineering and various industrial installation, the pipeline produces damage deformation of different degree after long-time the use easily, lead to the efficiency of oil gas transportation to reduce, produce in the transportation and reveal and lead to the loss increase, also caused serious potential safety hazard simultaneously, consequently necessary to carry out periodic detection to the pipeline, guarantee the intact and peripheral safety of pipeline, reduce pipeline operation management risk, reduce the emergence of operation production accident.

The detector in the pipeline only depends on the action of the power leather cup to move along with the medium, so that the optimal detection speed is difficult to ensure, when the running speed of the detector in the pipeline is too high, the pipeline cleaning is incomplete, the detection data of part of the pipeline section is easy to lose, the impact force of the detector in the pipeline is large, and the leather cup is seriously worn; when the detector in the pipeline runs too slowly, the pipeline cleaning operation and the detection efficiency are low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a stable form pipeline magnetic leakage detection device, this stable form pipeline magnetic leakage detection device can effectively discern defective position, defect nature etc. of pipeline, provides accurate data guide for the maintenance of pipeline.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a stable pipeline magnetic flux leakage detection device comprises a barrel, a plurality of probes and a plurality of magnetic steels, wherein the probes and the magnetic steels are arranged on the outer surface of the barrel, the probes are arranged at equal intervals along the circumferential direction of the barrel, the magnetic steels are divided into two groups on average, each group of magnetic steels are respectively and continuously arranged along the circumferential direction of the barrel, and steel brushes are uniformly and densely distributed on each magnetic steel so as to form two magnetic rings, and the two magnetic rings are respectively positioned on two sides of a probe ring formed by the probes arranged along the circumferential direction of the barrel;

the device also comprises a fixed plate fixedly arranged in the cylinder and a rotating plate which is positioned on one side of the fixed plate and arranged close to the surface of the fixed plate, wherein the circumferential end surface of the fixed plate is in contact connection with the inner wall of the cylinder;

the fixed plate is provided with at least two first through holes at intervals along the circumferential direction, the rotating plate is provided with at least two second through holes corresponding to the first through holes, when the first through holes and the second through holes are completely overlapped, the leakage flow rate is maximum, and when the first through holes and the second through holes are not completely overlapped, the leakage flow rate is zero.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the number of the first through holes and the number of the second through holes are 6, and the first through holes and the second through holes are respectively arranged along the circumferential direction of the fixed plate and the rotating plate at equal intervals.

2. In the above scheme, the first through hole and the second through hole are in the shape of a sector with a central angle of 30 °.

3. In the above scheme, the output shaft of the motor is connected with the rotating shaft through a coupling.

4. In the scheme, the outer surface of the cylinder body is sleeved with the leather cup in interference connection with the inner wall of the pipeline.

5. In the above scheme, the probe comprises a hall sensor probe and an eddy current sensor probe.

6. In the above scheme, the probe is mounted on the cylinder through a polyurethane bracket.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model discloses stable form pipeline magnetic leakage detection device, it can be accurate to the interior axial defect of pipeline through detect, effectively discern defect position, defect nature etc. of pipeline, provide accurate data guide for the maintenance of pipeline; in addition, the flow discharge area of the fluid in the pipeline can be adjusted in real time, so that the speed in the pipeline can be adjusted, the equipment always keeps moderate and constant running speed in the pipeline, and the detection precision of the pipeline defects is guaranteed.

Drawings

FIG. 1 is a sectional view of the stable pipeline magnetic flux leakage detection device of the present invention;

FIG. 2 is a schematic view of a local structure of the stable pipeline magnetic flux leakage detection device of the present invention;

fig. 3 is the utility model discloses stable form pipeline magnetic leakage detection device's local structure cross-sectional view.

In the above drawings: 1. a barrel; 2. a fixing plate; 3. a rotating plate; 4. a rotating shaft; 5. a motor; 6. a first through hole; 7. a second through hole; 8. a coupling; 9. a leather cup; 24. a probe; 25. magnetic steel; 26. a magnetic ring.

Detailed Description

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

Example 1: a stable pipeline magnetic flux leakage detection device comprises a cylinder body 1, a plurality of probes 24 and a plurality of magnetic steels 25, wherein the probes 24 and the magnetic steels 25 are arranged on the outer surface of the cylinder body 1, the probes 24 are arranged at equal intervals along the circumferential direction of the cylinder body 1, the magnetic steels 25 are averagely divided into two groups, each group of magnetic steels 25 are respectively and continuously arranged along the circumferential direction of the cylinder body 1, steel brushes are uniformly and densely distributed on each magnetic steel 25, and therefore two magnetic rings 26 are formed, and the two magnetic rings 26 are respectively positioned on two sides of a probe ring formed by the probes 24 arranged along the circumferential direction of the cylinder body;

the device is characterized by further comprising a fixed plate 2 fixedly arranged in the cylinder body 1 and a rotating plate 3 which is positioned on one side of the fixed plate 2 and arranged close to the surface of the fixed plate 2, wherein the circumferential end face of the fixed plate 2 is in contact connection with the inner wall of the cylinder body 1, a rotating shaft 4 is arranged in the center of the rotating plate 3, and one end, back to the rotating plate 3, of the rotating shaft 4 penetrates out of the fixed plate 2 and is connected with an output shaft of a motor 5;

at least two first through holes 6 are formed in the fixed plate 2 at intervals along the circumferential direction, at least two second through holes 7 corresponding to the first through holes 6 are formed in the rotating plate 3, when the first through holes 6 and the second through holes 7 are completely overlapped, the leakage flow rate is the largest, and when the first through holes 6 and the second through holes 7 are not completely overlapped, the leakage flow rate is zero.

The number of the first through holes 6 and the second through holes 7 is 6, and the first through holes and the second through holes are respectively arranged along the circumferential direction of the fixed plate 2 and the rotating plate 3 at equal intervals; the first through hole 6 and the second through hole 7 are fan-shaped with a central angle of 30 degrees; the output shaft of the motor 5 is connected with the rotating shaft 4 through a coupling 8.

Example 2: a stable pipeline magnetic flux leakage detection device comprises a cylinder body 1, a plurality of probes 24 and a plurality of magnetic steels 25, wherein the probes 24 and the magnetic steels 25 are arranged on the outer surface of the cylinder body 1, the probes 24 are arranged at equal intervals along the circumferential direction of the cylinder body 1, the magnetic steels 25 are averagely divided into two groups, each group of magnetic steels 25 are respectively and continuously arranged along the circumferential direction of the cylinder body 1, steel brushes are uniformly and densely distributed on each magnetic steel 25, and therefore two magnetic rings 26 are formed, and the two magnetic rings 26 are respectively positioned on two sides of a probe ring formed by the probes 24 arranged along the circumferential direction of the cylinder body;

The outer surface of the cylinder body 1 is sleeved with a leather cup 9 which is in interference connection with the inner wall of the pipeline; the probe 24 includes a hall sensor probe and an eddy current sensor probe; the probe 24 is mounted on the barrel 1 by a polyurethane bracket.

By adopting the stable pipeline magnetic flux leakage detection device, the axial defects in the passing pipeline can be accurately detected, the defect positions, the defect properties and the like of the pipeline can be effectively identified, and accurate data guidance is provided for the maintenance of the pipeline;

in addition, the flow discharge area of the fluid in the pipeline can be adjusted in real time, so that the speed in the pipeline can be adjusted, the equipment always keeps moderate and constant running speed in the pipeline, and the detection precision of the pipeline defects is guaranteed.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a stable form pipeline magnetic leakage detection device which characterized in that: the magnetic ring type ultrasonic probe comprises a barrel body (1), a plurality of probes (24) and a plurality of magnetic steels (25), wherein the probes (24) are arranged on the outer surface of the barrel body (1) at equal intervals along the circumferential direction of the barrel body (1), the magnetic steels (25) are evenly divided into two groups, each group of magnetic steels (25) are respectively and continuously arranged along the circumferential direction of the barrel body (1), steel brushes are uniformly and densely distributed on each magnetic steel (25) to form two magnetic rings (26), and the two magnetic rings (26) are respectively positioned on two sides of a probe ring formed by the probes (24) arranged along the circumferential direction of the barrel body (1);

the device is characterized by further comprising a fixed plate (2) fixedly arranged in the barrel body (1) and a rotating plate (3) which is located on one side of the fixed plate (2) and arranged close to the surface of the fixed plate (2), wherein the circumferential end face of the fixed plate (2) is in contact connection with the inner wall of the barrel body (1), a rotating shaft (4) is arranged in the center of the rotating plate (3), and one end, back to the rotating plate (3), of the rotating shaft (4) penetrates out of the fixed plate (2) and is connected with an output shaft of a motor (5);

at least two first through holes (6) are formed in the fixed plate (2) at intervals along the circumferential direction, at least two second through holes (7) corresponding to the first through holes (6) are formed in the rotating plate (3), when the first through holes (6) and the second through holes (7) are completely overlapped, the leakage flow rate is maximum, and when the first through holes (6) and the second through holes (7) are not completely overlapped, the leakage flow rate is zero.

2. The stabilized pipeline magnetic flux leakage detection device of claim 1, wherein: the number of the first through holes (6) and the number of the second through holes (7) are 6, and the first through holes and the second through holes are respectively arranged at equal intervals along the circumferential direction of the fixed plate (2) and the rotating plate (3).

3. The stabilized pipeline magnetic flux leakage detection device of claim 1, wherein: the first through hole (6) and the second through hole (7) are in fan shapes with central angles of 30 degrees.

4. The stabilized pipeline magnetic flux leakage detection device of claim 1, wherein: the output shaft of the motor (5) is connected with the rotating shaft (4) through a coupling (8).

5. The stabilized pipeline magnetic flux leakage detection device of claim 1, wherein: the outer surface of the cylinder body (1) is sleeved with a leather cup (9) which is in interference connection with the inner wall of the pipeline.

6. The stabilized pipeline magnetic flux leakage detection device of claim 1, wherein: the probes (24) include Hall sensor probes and eddy current sensor probes.

7. The stabilized pipeline magnetic flux leakage detection device of claim 1, wherein: the probe (24) is arranged on the cylinder body (1) through a polyurethane bracket.