CN211292721U - Instrument self-walking steel pipe internal alternating current magnetic flux leakage detection system - Google Patents
Instrument self-walking steel pipe internal alternating current magnetic flux leakage detection system Download PDFInfo
- Publication number
- CN211292721U CN211292721U CN201922182934.2U CN201922182934U CN211292721U CN 211292721 U CN211292721 U CN 211292721U CN 201922182934 U CN201922182934 U CN 201922182934U CN 211292721 U CN211292721 U CN 211292721U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- pipe
- self
- magnetic flux
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model provides an instrument self-walking steel pipe in-pipe alternating current magnetic flux leakage detection system, which comprises an in-pipe self-crawling mechanism arranged in a steel pipe and a righting slide rail mechanism arranged outside the steel pipe; the self-crawling mechanism in the pipe and the righting slide rail mechanism are adsorbed by magnetic force, and the self-crawling mechanism in the pipe is used for detecting the inner surface of the steel pipe. Furthermore, the in-pipe self-crawling mechanism comprises an in-pipe wheel, an in-pipe wheel shaft, an in-pipe wheel fixing seat, an in-pipe array probe, an inner permanent magnet and an inner fixing plate; the righting slide rail mechanism comprises an outer walking wheel, a walking wheel shaft, a walking wheel fixing seat, a slide rail with a rectangular cross section, an outer permanent magnet and an outer fixing seat; the utility model has the advantages of the detection mode is simple, and detectivity is high.
Description
Technical Field
The utility model belongs to the technical field of the steel pipe nondestructive test technique and specifically relates to an instrument is from intraductal interchange magnetic leakage detecting system of steel pipe of walking.
Background
With the rapid development of national economy, steel pipe manufacturing has also been vigorously developed in China. The steel pipe is applied to a plurality of industries, however, the steel pipe has inevitable defects both in the production process and the use process, which causes great hidden dangers to the safety and the use of the steel pipe, so that the steel pipe can enter the next link only through nondestructive testing in the production and use processes.
For the magnetic flux leakage detection of the defects on the inner surface of the steel pipe, the current main detection method is to carry out direct current magnetization on the steel pipe, a probe is used for scanning the outer surface of the steel pipe, and simultaneously detect the defects on the outer surface and the inner surface of the steel pipe.
Disclosure of Invention
An object of the utility model is to provide an instrument is from intraductal interchange magnetic leakage detecting system of steel pipe of walking, can detect comprehensively to steel pipe internal surface defect based on interchange magnetic leakage detects. The utility model adopts the technical proposal that:
an instrument self-walking steel pipe inner alternating current magnetic flux leakage detection system comprises an in-pipe self-creeping mechanism arranged in a steel pipe and a righting slide rail mechanism arranged outside the steel pipe; the self-crawling mechanism in the pipe and the righting slide rail mechanism are adsorbed by magnetic force, and the self-crawling mechanism in the pipe is used for detecting the inner surface of the steel pipe.
Furthermore, the in-pipe self-crawling mechanism comprises an in-pipe wheel, an in-pipe wheel shaft, an in-pipe wheel fixing seat, an in-pipe array probe, an inner permanent magnet and an inner fixing plate;
the inner wheel of the pipe is rotatably arranged on the inner wheel fixing seat of the pipe through the inner wheel shaft of the pipe; the left end and the right end of the inner fixing plate are respectively connected with an inner tube wheel fixing seat provided with an inner tube wheel relative to one side of the inner wall of the steel tube; two pairs of inner wheels are arranged on the inner wheel and are respectively arranged at the front end and the rear end of the inner fixing plate;
the array probe in the pipe and the inner permanent magnet are fixed on one side of the inner fixing plate, which is opposite to the inner wall of the steel pipe;
the righting slide rail mechanism comprises an outer walking wheel, a walking wheel shaft, a walking wheel fixing seat, a slide rail with a rectangular cross section, an outer permanent magnet and an outer fixing seat;
the sliding rail parallel to the steel pipe is arranged in the outer fixed seat; the outer travelling wheel is rotatably arranged on a travelling wheel fixing seat through a travelling wheel shaft, and the travelling wheel fixing seat is connected with the outer fixing seat; the outer travelling wheels comprise two groups which are respectively arranged at the front end and the rear end of the outer fixed seat; the outer traveling wheel is matched with the sliding rail in a sticking way;
the outer permanent magnet is fixed on one side of the outer fixed seat relative to the outer wall of the steel pipe and corresponds to the inner permanent magnet.
Furthermore, the front end and the rear end of one side of the inner fixed plate, which is opposite to the inner wall of the steel pipe, are respectively provided with an inner permanent magnet; correspondingly, the front end and the rear end of the outer fixed seat relative to one side of the outer wall of the steel pipe are respectively provided with an outer permanent magnet.
Furthermore, the in-tube array probe comprises two strip-shaped alternating current magnetic leakage array probes which are arranged in parallel and work in a matching mode, and the two strip-shaped alternating current magnetic leakage array probes are located between the two inner permanent magnets.
Furthermore, the orientation of one of the strip-shaped alternating current leakage array probes is 45 degrees with the axis of the steel pipe, and the orientation of the other strip-shaped alternating current leakage array probe is 135 degrees with the axis of the steel pipe.
Furthermore, the inner wheel of the pipe is at an angle with the axis of the steel pipe.
Furthermore, the angle between the inner wheel of the pipe and the axis of the steel pipe is 15-60 degrees.
Furthermore, the number of each group of outer traveling wheels is three, and the outer traveling wheels are respectively attached to the left side and the right side of the sliding rail and one side of the sliding rail, which deviates from the steel pipe.
Furthermore, a gap is kept between the inner permanent magnet and the inner wall of the steel pipe; and a gap is kept between the outer permanent magnet and the outer wall of the steel pipe.
Furthermore, rubber-coated wheels are adopted as the inner wheels and/or the outer travelling wheels of the tube.
The utility model has the advantages that: compare with current steel pipe internal surface defect detection mechanism and detection method, the utility model has the advantages of the detection mode is simple, and detectivity is high. In the testing process, the mechanism of crawling certainly in the intraductal makes the mechanism of crawling certainly keep the gesture certain in the testing process through the magnetic adsorption between interior permanent magnet and the outer permanent magnet of righting slide rail mechanism, produce frictional force between the intraductal wheel of pipe and the steel pipe inner wall under the magnetic adsorption, thereby the mechanism of crawling certainly in the intraductal passive the advancing in the steel pipe is rotatory, it follows intraductal the mechanism of crawling passively to right slide rail mechanism under the magnetic adsorption of permanent magnet and advances passively, and the strip that is on the mechanism of crawling certainly in the intraductal magnetic leakage array probe of exchanging accomplishes the magnetic leakage and detects to the steel pipe internal surface. The detection system has high independent innovation, low cost and wide market prospect.
Drawings
Fig. 1 is a schematic view of the main viewing angle of the present invention.
Fig. 2 is a schematic view of a side view angle of the present invention.
Fig. 3 is a schematic diagram of the arrangement of the strip ac leakage magnetic probe of the present invention.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides an apparatus self-walking ac magnetic flux leakage detection system in a steel pipe, including an in-pipe self-crawling mechanism 1 disposed in a steel pipe 3 and a centering slide rail mechanism 2 disposed outside the steel pipe 3; the self-crawling mechanism 1 and the righting slide rail mechanism 2 in the pipe are adsorbed through magnetic force, and the self-crawling mechanism 1 in the pipe is used for detecting the inner surface of the steel pipe.
The in-pipe self-crawling mechanism 1 comprises an in-pipe wheel 11, an in-pipe wheel shaft 12, an in-pipe wheel fixing seat 13, an in-pipe array probe 14, an inner permanent magnet 15 and an inner fixing plate 16; the rubber covered wheel is preferably adopted as the inner wheel 11 of the pipe, so that the damage to the inner wall of the steel pipe can be avoided, and the operation is more stable;
the inner tube 11 is rotatably arranged on the inner tube fixing seat 13 through the inner tube wheel shaft 12; the left end and the right end of the inner fixing plate 16 are respectively connected with an inner tube wheel fixing seat 13 provided with an inner tube wheel 11 opposite to one side of the inner wall of the steel tube; two pairs of inner tube wheels 11 can be arranged and are respectively arranged at the front end and the rear end of the inner fixing plate 16; the inner pipe wheel 11 is preferably at an angle, for example, 15 to 60 degrees, to the steel pipe axis, so that the in-pipe self-crawling mechanism 1 can advance relative to the steel pipe when the steel pipe 3 rotates, so as to detect the whole steel pipe;
the in-pipe array probe 14 and the inner permanent magnet 15 are fixed on one side of the inner fixing plate 16 opposite to the inner wall of the steel pipe; the height of the array probe 14 in the pipe is larger than that of the inner permanent magnet 15, so that a gap is kept between the inner permanent magnet 15 and the inner wall of the steel pipe;
preferably, the inner fixing plate 16 is provided with an inner permanent magnet 15 at each of the front and rear ends of one side opposite to the inner wall of the steel pipe; the intra-tube array probe 14 comprises two strip-shaped alternating current leakage array probes 1401 which are arranged in parallel and work in a matching mode, and the two strip-shaped alternating current leakage array probes 1401 are positioned between two inner permanent magnets 15; fig. 3 shows the arrangement of two strip ac leakage array probes 1401, where one of the strip ac leakage array probes 1401 is oriented at 45 degrees to the steel pipe axis and the other strip ac leakage array probe 1401 is oriented at 135 degrees to the steel pipe axis;
the righting slide rail mechanism 2 comprises an outer walking wheel 21, a walking wheel shaft 22, a walking wheel fixing seat 23, a slide rail 24 with a rectangular cross section, an outer permanent magnet 25 and an outer fixing seat 26; wherein the outer walking wheel 21 can also adopt a rubber covered wheel;
the slide rail 24 parallel to the steel pipe 3 is arranged in the outer fixed seat 26; the outer travelling wheel 21 is rotatably arranged on a travelling wheel fixing seat 23 through a travelling wheel shaft 22, and the travelling wheel fixing seat 23 is connected to an outer fixing seat 26; the outer traveling wheels 21 comprise two groups which are respectively arranged at the front end and the rear end of the outer fixed seat 26; the number of each group of outer traveling wheels 21 is three, and the three outer traveling wheels are respectively attached to the left side and the right side of the sliding rail 24 and one side deviating from the steel pipe 3;
the outer permanent magnet 25 is fixed on one side of the outer fixed seat 26 opposite to the outer wall of the steel pipe and corresponds to the inner permanent magnet 15; preferably, the front end and the rear end of the outer fixed seat 26 opposite to one side of the outer wall of the steel pipe are respectively provided with an outer permanent magnet 25; the inner and outer permanent magnets at the front and rear ends ensure the stability and reliability of magnetic adsorption;
the slide rail 24 can be fixed on the frame, so that a gap is kept between the outer permanent magnet 25 and the outer wall of the steel pipe;
in the magnetic flux leakage detection process, the steel pipe 3 can rotate under the driving of the roller mechanism, the pipe wall of the steel pipe corresponding to the outer permanent magnet 25 and the inner permanent magnet 15 is in a saturated magnetization state, magnetic lines of force of the inner and outer permanent magnets penetrate through the steel pipe, so that the in-pipe self-crawling mechanism 1 is adsorbed on the inner surface of the steel pipe, friction force is formed between the in-pipe wheel 11 and the inner surface of the steel pipe, the in-pipe self-crawling mechanism 1 is enabled to move forwards passively, the strip-shaped alternating current magnetic flux leakage array probe 1401 detects the inner surface of the steel pipe 3, in the advancing process of the in-pipe self-crawling mechanism 1 relative to the steel pipe, due to the magnetic adsorption of the centering sliding rail mechanism 2, the posture of the in-pipe self-crawling mechanism 1 is kept constant, the magnetic flux leakage detection is not influenced by left and right deflection; the detected signals can be transmitted to a computer system in real time through wireless signals;
the steel pipe inner surface alternating current magnetic flux leakage detection system in the embodiment detects the inner surface of the steel pipe based on alternating current magnetic flux leakage detection, can meet the automatic detection requirement of the inner surface of the steel pipe, is high in independent innovation, and has wide market application prospect.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. An instrument self-walking steel pipe inner alternating current magnetic flux leakage detection system is characterized by comprising an inner pipe self-creeping mechanism (1) arranged in a steel pipe (3) and a righting slide rail mechanism (2) arranged outside the steel pipe (3); the self-crawling mechanism (1) in the pipe and the righting slide rail mechanism (2) are adsorbed through magnetic force, and the self-crawling mechanism (1) in the pipe is used for detecting the inner surface of the steel pipe.
2. The apparatus of claim 1, wherein the apparatus comprises a magnetic flux leakage detecting system for detecting magnetic flux leakage in a self-propelled steel pipe,
the in-pipe self-crawling mechanism (1) comprises an in-pipe wheel (11), an in-pipe wheel shaft (12), an in-pipe wheel fixing seat (13), an in-pipe array probe (14), an inner permanent magnet (15) and an inner fixing plate (16);
the inner tube (11) is rotatably arranged on the inner tube wheel fixing seat (13) through the inner tube wheel shaft (12); the left end and the right end of the inner fixing plate (16) are respectively connected with an inner tube wheel fixing seat (13) provided with an inner tube (11) relative to one side of the inner wall of the steel tube; two pairs of inner tube wheels (11) are arranged and are respectively arranged at the front end and the rear end of the inner fixing plate (16);
the array probe (14) in the pipe and the inner permanent magnet (15) are fixed on one side of the inner fixing plate (16) opposite to the inner wall of the steel pipe;
the righting slide rail mechanism (2) comprises an outer walking wheel (21), a walking wheel shaft (22), a walking wheel fixing seat (23), a slide rail (24) with a rectangular cross section, an outer permanent magnet (25) and an outer fixing seat (26);
a sliding rail (24) parallel to the steel pipe (3) is arranged in the outer fixed seat (26); the outer travelling wheel (21) is rotatably arranged on a travelling wheel fixing seat (23) through a travelling wheel shaft (22), and the travelling wheel fixing seat (23) is connected to an outer fixing seat (26); the outer travelling wheels (21) comprise two groups which are respectively arranged at the front end and the rear end of the outer fixed seat (26); the outer travelling wheel (21) is matched with the sliding rail (24) in a sticking way;
the outer permanent magnet (25) is fixed on one side of the outer fixed seat (26) relative to the outer wall of the steel pipe and corresponds to the inner permanent magnet (15).
3. The apparatus of claim 2, wherein the apparatus comprises a magnetic flux leakage detecting system for detecting magnetic flux leakage in a self-propelled steel pipe,
an inner permanent magnet (15) is respectively arranged at the front end and the rear end of one side of the inner fixed plate (16) relative to the inner wall of the steel pipe; correspondingly, an outer permanent magnet (25) is respectively arranged at the front end and the rear end of one side of the outer fixed seat (26) relative to the outer wall of the steel pipe.
4. The apparatus of claim 3, wherein the apparatus comprises a magnetic flux leakage detecting system,
the in-pipe array probe (14) comprises two strip-shaped alternating current leakage array probes (1401) which are arranged in parallel and work in a matched mode, and the two strip-shaped alternating current leakage array probes (1401) are located between two inner permanent magnets (15).
5. The apparatus of claim 4, wherein the apparatus comprises a magnetic flux leakage detecting system,
the orientation of one strip-shaped alternating current leakage array probe (1401) forms an angle of 45 degrees with the axis of the steel pipe, and the orientation of the other strip-shaped alternating current leakage array probe (1401) forms an angle of 135 degrees with the axis of the steel pipe.
6. The self-propelled steel pipe internal alternating current magnetic flux leakage detection system of any one of claims 2 to 5,
the inner tube (11) and the axis of the steel tube form a certain angle.
7. The apparatus of claim 6, wherein the apparatus comprises a magnetic flux leakage detecting system,
the angle between the inner tube (11) and the axis of the steel tube is 15-60 degrees.
8. The self-propelled steel pipe internal alternating current magnetic flux leakage detection system of any one of claims 2 to 5,
the number of each group of outer traveling wheels (21) is three, and the three outer traveling wheels are respectively attached to the left side and the right side of the sliding rail (24) and one side departing from the steel pipe (3).
9. The self-propelled steel pipe internal alternating current magnetic flux leakage detection system of any one of claims 2 to 5,
a gap is kept between the inner permanent magnet (15) and the inner wall of the steel pipe; a gap is kept between the outer permanent magnet (25) and the outer wall of the steel pipe.
10. The self-propelled steel pipe internal alternating current magnetic flux leakage detection system of any one of claims 2 to 5,
the inner wheel (11) and/or the outer walking wheel (21) of the pipe adopt rubber covered wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182934.2U CN211292721U (en) | 2019-12-06 | 2019-12-06 | Instrument self-walking steel pipe internal alternating current magnetic flux leakage detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182934.2U CN211292721U (en) | 2019-12-06 | 2019-12-06 | Instrument self-walking steel pipe internal alternating current magnetic flux leakage detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211292721U true CN211292721U (en) | 2020-08-18 |
Family
ID=72019138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922182934.2U Active CN211292721U (en) | 2019-12-06 | 2019-12-06 | Instrument self-walking steel pipe internal alternating current magnetic flux leakage detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211292721U (en) |
-
2019
- 2019-12-06 CN CN201922182934.2U patent/CN211292721U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206292206U (en) | A kind of automobile-used detection probe of rail examination based on Magnetic Flux Leakage Inspecting | |
| CN102759564B (en) | A kind of variable diameter pipe external magnetic memory detection device | |
| CN205749397U (en) | A kind of steel tube defect detection device | |
| CN214585088U (en) | Pipeline detection device | |
| CN204302230U (en) | A kind of eddy current multiplexed array probe | |
| CN109001294B (en) | Pipeline inner wall detection device | |
| CN204514910U (en) | The expanding wheel device that steel ball surface defect detects | |
| CN103693073A (en) | Contactless vehicle wheel diameter dynamical measuring device and method | |
| CN108819980B (en) | Device and method for online dynamic measurement of geometric parameters of train wheels | |
| CN211292718U (en) | Synchronous self-walking system of pipeline internal and external detection instrument | |
| CN105334260A (en) | Steel tube pulse magnetization magnetic flux leakage detecting device | |
| CN211292721U (en) | Instrument self-walking steel pipe internal alternating current magnetic flux leakage detection system | |
| Shi et al. | High-precision diameter detector and three-dimensional reconstruction method for oil and gas pipelines | |
| CN210572108U (en) | Hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw | |
| CN202159035U (en) | Defect quantitative nondestructive inspecting equipment for oil casing | |
| CN202794107U (en) | Variable diameter pipe outside magnetic memory detection device | |
| CN206161588U (en) | Oil pipe electromagnetism combination formula magnetic flux leakage detection device | |
| CN202693524U (en) | Horizontal defect detecting device for oil casing pipe leakage magnetic flaw detecting machine | |
| CN208313888U (en) | Wire rope standard equipment | |
| CN105548346A (en) | Magnetization device for magnetic flux leakage imaging inspection of workpiece | |
| CN105548344A (en) | Leakage flux and induction current based rail nondestructive testing device | |
| CN202770350U (en) | A detection apparatus for end portions of an automobile brake pipe | |
| CN202794160U (en) | Bracket component of steel plate side flaw detecting device | |
| CN205192423U (en) | Detect in pipeline with detection device in mileage measurement mechanism and pipeline magnetic leakage | |
| CN209400473U (en) | A kind of heterotype tubing absorption type eddy current array probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |