CN114166931B - Magnetic leakage detector - Google Patents
Magnetic leakage detector Download PDFInfo
- Publication number
- CN114166931B CN114166931B CN202111506916.0A CN202111506916A CN114166931B CN 114166931 B CN114166931 B CN 114166931B CN 202111506916 A CN202111506916 A CN 202111506916A CN 114166931 B CN114166931 B CN 114166931B
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- Prior art keywords
- mounting seat
- connecting portion
- festival
- chain
- connecting part
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- 230000004907 flux Effects 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
Abstract
The invention discloses a magnetic flux leakage detector, adjacent cylinders are connected through a universal joint, and the universal joint comprises: the front mounting seat and the rear mounting seat are respectively provided with a through hole communicated with the central channel, the outside of the chain is coated with an elastic rubber sleeve, the front mounting seat and the rear mounting seat respectively comprise a first connecting part connected with the chain and a second connecting part connected with the barrel, a plurality of bumps which are arranged at intervals along the circumferential direction are arranged on the outer surface of one end of the first connecting part far away from the second connecting part and correspond to the chain, the end part of the chain is sleeved on the bumps and is welded with the bumps, and the outer diameter of one end of the second connecting part close to the first connecting part is larger than that of the first connecting part. The magnetic flux leakage detector ensures the stability and the safety of the transmission of the electrical signals of the equipment.
Description
Technical Field
The invention relates to a magnetic flux leakage detector, and belongs to the technical field of pipeline detection.
Background
The magnetic flux leakage detection technology can detect metal loss defects such as corrosion, mechanical damage and the like of the inner wall and the outer wall of the pipeline, has low requirements on the cleanliness of the detected pipeline, and can be used for oil and gas pipelines. The defects can be identified, positioned and quantitatively counted through the on-line detection of the magnetic leakage detector, and the magnetic leakage detector is an important tool for guiding reasonable maintenance of the pipeline and carrying out the management work of the integrity of the pipeline.
The magnetic flux leakage detector is generally designed into a multi-section structure, and the sections are connected through connecting wires, so that the mechanical connection of the sections is ensured, and meanwhile, the communication connection and the electric connection between the power saving devices are required to be met. However, when the existing detector operates in a bent pipeline, the connecting device between the sections faces the problem that the bending degree is large and the breakage easily occurs.
Disclosure of Invention
The invention aims to provide a magnetic leakage detector which ensures the stability and the safety of electric signal transmission in the process of running equipment in a pipeline and ensures the stability of rubber sleeve performance in the long-time use process.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a magnetic flux leakage detector, includes battery festival, switching box festival and detection festival, install the battery that supplies power for the switching box festival through the power cable in the barrel of battery festival, install a plurality of numerical control box on the barrel surface of switching box festival, a plurality of sensor that is used for inducing magnetic field to change is arranged in the barrel surface middle part of detecting the festival along circumference, be provided with the magnet steel that is used for forming the magnetic circuit on the barrel surface of detecting the festival and is located the sensor outside, every the sensor is all connected with a numerical control box through the data cable, is connected through a universal joint between the adjacent barrel;
the universal joint includes: the device comprises a front mounting seat connected with one cylinder, a rear mounting seat connected with the other cylinder and at least three chains connected between the front mounting seat and the rear mounting seat, wherein the chains are arranged at equal intervals along the circumferential direction and are connected with the outer edges of one end of each of the front mounting seat and the rear mounting seat, so that a central channel is enclosed between a plurality of chains, through holes communicated with the central channel are formed in each of the front mounting seat and the rear mounting seat, an elastic rubber sleeve is coated outside the chains, and through holes corresponding to the central channel are formed in the center of the elastic rubber sleeve;
the front mounting seat and the rear mounting seat both comprise a first connecting part connected with the chain and a second connecting part connected with the cylinder, a plurality of bumps which are arranged along the circumferential direction at intervals and correspond to the chain are arranged on the outer surface of one end of the first connecting part, the end part of the chain is sleeved on the bumps and is welded and connected with the bumps, the outer diameter of one end of the second connecting part, which is close to the first connecting part, is larger than that of the first connecting part, so that a step groove is formed between the second connecting part and the first connecting part, and the end part of the elastic rubber sleeve is embedded in the step groove and is attached to the end face of the second connecting part.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the sensor is a hall sensor.
2. In the scheme, the battery section and the switching box section are both provided with 2 sections.
3. In the above scheme, the first connecting part and the second connecting part are welded or obtained through integral molding.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the magnetic flux leakage detector can move in a pipeline with a certain deformation and detect the defects of the pipeline passing through, the universal joint for connecting each functional joint comprises an installation seat and at least three chains connected between the front installation seat and the rear installation seat, the chains are arranged at equal intervals along the circumferential direction and are connected with the outer side edges of one end of each of the front installation seat and the rear installation seat, a central channel is formed between the chains, through holes communicated with the central channel are formed in the front installation seat and the rear installation seat, an elastic rubber sleeve is coated outside the chains, and through holes corresponding to the central channel are formed in the center of the elastic rubber sleeve, so that the stability and the safety of electric signal transmission of equipment in the running process of the pipeline are ensured, and the stability of the performance of the rubber sleeve in the long-time use process is ensured.
2. The front mounting seat and the rear mounting seat of the magnetic flux leakage detector comprise a first connecting part connected with a chain and a second connecting part connected with a cylinder, a plurality of bumps are arranged on the outer surface of one end of the first connecting part far away from the second connecting part at intervals along the circumferential direction and correspond to the chain, the end part of the chain is sleeved on the bumps and is welded and connected with the bumps, and the outer diameter of one end of the second connecting part close to the first connecting part is larger than that of the first connecting part, so that a step groove is formed between the second connecting part and the first connecting part, and the end part of an elastic rubber sleeve is embedded into the step groove and is attached to the end surface of the second connecting part, thereby being convenient for mounting the chain, improving the structural stability between the chain and the mounting seat and between the rubber sleeve and the chain, and prolonging the service life of the whole and the safety in the use process.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a leakage flux detector according to the present invention;
FIG. 2 is a schematic diagram of a partial structure of the leakage flux detector of the present invention;
FIG. 3 is a schematic diagram showing a partial structure of the leakage flux detector according to the present invention;
FIG. 4 is a schematic diagram of a partially exploded structure of the leakage detector of the present invention.
In the above figures: 1. a battery section; 2. a junction box section; 21. a numerical control box; 3. a detection section; 31. a sensor; 4. a cylinder; 5. a front mounting base; 6. a rear mounting base; 7. a chain; 8. a central passage; 9. an elastic rubber sleeve; 101. a first connection portion; 102. a second connecting portion; 11. a bump; 12. a step groove.
Detailed Description
In the description of this patent, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in this patent will be understood by those of ordinary skill in the art in a specific context.
Example 1: the utility model provides a magnetic flux leakage detector, includes battery festival 1, switching box festival 2 and detection festival 3, install the battery that passes through power cable and give switching box festival 2 power supply in the barrel 4 of battery festival 1, install a plurality of numerical control box 21 on the barrel 4 surface of switching box festival 2, a plurality of sensor 31 that are used for inducing magnetic field variation are arranged in the barrel 4 surface middle part of detecting festival 3 along circumference, be provided with the magnet steel that is used for forming the magnetic circuit on the barrel 4 surface of detecting festival 3 and be located the sensor 31 outside, every sensor 31 all is connected with a numerical control box 21 through the data cable, is connected through a universal joint between the adjacent barrel 4;
the universal joint includes: the novel plastic rubber sleeve comprises a front mounting seat 5 connected with one cylinder body 4, a rear mounting seat 6 connected with the other cylinder body 4 and at least three chains 7 connected between the front mounting seat 5 and the rear mounting seat 6, wherein the chains 7 are arranged at equal intervals along the circumferential direction and are connected to the outer side edges of one end of each of the front mounting seat 5 and the rear mounting seat 6, so that a central channel 8 is formed by surrounding a plurality of chains 7, through holes communicated with the central channel 8 are formed in each of the front mounting seat 5 and the rear mounting seat 6, an elastic rubber sleeve 9 is coated outside the chains 7, and a through hole corresponding to the central channel 8 is formed in the center of the elastic rubber sleeve 9;
the front mounting seat 5 and the rear mounting seat 6 respectively comprise a first connecting portion 101 connected with the chain 7 and a second connecting portion 102 connected with the cylinder body 4, a plurality of bumps 11 which are arranged at intervals along the circumferential direction and correspond to the chain 7 are arranged on the outer surface of one end of the first connecting portion 101, the end portion of the chain 7 is sleeved on the bumps 11 and is welded with the bumps 11, the outer diameter of one end, close to the first connecting portion 101, of the second connecting portion 102 is larger than that of the first connecting portion 101, so that a step groove 12 is formed between the second connecting portion 102 and the first connecting portion 101, and the end portion of the elastic rubber sleeve 9 is embedded in the step groove 12 and is attached to the end face of the second connecting portion 102.
The battery section 1 and the adapter box section 2 are both provided with 2 sections.
The first connecting portion 101 and the second connecting portion 102 are welded or integrally formed.
Example 2: the utility model provides a magnetic flux leakage detector, includes battery festival 1, switching box festival 2 and detection festival 3, install the battery that passes through power cable and give switching box festival 2 power supply in the barrel 4 of battery festival 1, install a plurality of numerical control box 21 on the barrel 4 surface of switching box festival 2, a plurality of sensor 31 that are used for inducing magnetic field variation are arranged in the barrel 4 surface middle part of detecting festival 3 along circumference, be provided with the magnet steel that is used for forming the magnetic circuit on the barrel 4 surface of detecting festival 3 and be located the sensor 31 outside, every sensor 31 all is connected with a numerical control box 21 through the data cable, is connected through a universal joint between the adjacent barrel 4;
the universal joint includes: the novel plastic rubber sleeve comprises a front mounting seat 5 connected with one cylinder body 4, a rear mounting seat 6 connected with the other cylinder body 4 and at least three chains 7 connected between the front mounting seat 5 and the rear mounting seat 6, wherein the chains 7 are arranged at equal intervals along the circumferential direction and are connected to the outer side edges of one end of each of the front mounting seat 5 and the rear mounting seat 6, so that a central channel 8 is formed by surrounding a plurality of chains 7, through holes communicated with the central channel 8 are formed in each of the front mounting seat 5 and the rear mounting seat 6, an elastic rubber sleeve 9 is coated outside the chains 7, and a through hole corresponding to the central channel 8 is formed in the center of the elastic rubber sleeve 9;
the front mounting seat 5 and the rear mounting seat 6 respectively comprise a first connecting portion 101 connected with the chain 7 and a second connecting portion 102 connected with the cylinder body 4, a plurality of bumps 11 which are arranged at intervals along the circumferential direction and correspond to the chain 7 are arranged on the outer surface of one end of the first connecting portion 101, the end portion of the chain 7 is sleeved on the bumps 11 and is welded with the bumps 11, the outer diameter of one end, close to the first connecting portion 101, of the second connecting portion 102 is larger than that of the first connecting portion 101, so that a step groove 12 is formed between the second connecting portion 102 and the first connecting portion 101, and the end portion of the elastic rubber sleeve 9 is embedded in the step groove 12 and is attached to the end face of the second connecting portion 102.
The sensor 31 is a hall sensor.
The first connecting portion 101 and the second connecting portion 102 are welded or integrally formed.
By adopting the magnetic flux leakage detector, during production and processing, two ends of the chain are correspondingly sleeved on the convex blocks and welded, so that the two installation seats are connected through the chains, a core rod is inserted into a central channel surrounded by the through holes of the installation seats and the chain, and then the outer side of the chain is integrally injected with glue to form a glue sleeve, and a cable channel is formed in the center of the glue sleeve.
The adjacent cylinders are connected through a universal joint, and the universal joint comprises: the front mounting seat and the rear mounting seat are respectively provided with a through hole communicated with the central channel, the outside of the chain is covered with an elastic rubber sleeve, the center of the elastic rubber sleeve is provided with a through hole corresponding to the central channel, the central channel covered by the plurality of chains is provided with a through hole corresponding to the central channel, so that an internal wiring channel is provided for a plurality of power lines and signal lines connected between the cylinders, the conditions of impurity cuts in a pipeline, excessive stress and the like caused by winding various cables outside are avoided, and the stability and safety of electric signal transmission in the process of running in the pipeline are ensured; the flexible space can be provided for the stress deformation of the rubber sleeve, and the binding force between the chain and the rubber sleeve is enhanced, so that the stress of the rubber sleeve is more balanced, the fatigue resistance of the rubber sleeve is improved, the stability of the rubber sleeve performance in the long-time use process is ensured, and the situations of local tearing and the like are avoided;
and the front mounting seat and the rear mounting seat of the novel rubber sleeve comprise a first connecting part connected with the chain and a second connecting part connected with the cylinder, a plurality of bumps which are arranged along the circumferential direction at intervals and correspond to the chain are arranged on the outer surface of one end of the first connecting part far away from the second connecting part, the end part of the chain is sleeved on the bumps and is welded and connected with the bumps, the outer diameter of one end of the second connecting part, which is close to the first connecting part, is larger than the outer diameter of the first connecting part, so that a step groove is formed between the second connecting part and the first connecting part, the end part of the elastic rubber sleeve is embedded in the step groove and is attached to the end surface of the second connecting part, the novel rubber sleeve is convenient for mounting the chain, the structural stability between the chain and the mounting seat is improved, the chain is effectively prevented from being damaged due to collision and the like between the chain and between the mounting seat in the long-time use process, and the protection of the rubber sleeve on the chain is enhanced, and the whole service life and the safety in the use process are prolonged.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (4)
1. The utility model provides a magnetic leakage detector, includes battery festival (1), switching box festival (2) and surveys festival (3), install the battery that supplies power for switching box festival (2) through the power supply cable in barrel (4) of battery festival (1), install a plurality of numerical control box (21) on barrel (4) surface of switching box festival (2), a plurality of sensor (31) that are used for inducing magnetic field to change are arranged in barrel (4) surface middle part of surveying festival (3) along circumference, be provided with the magnet steel that is used for forming the magnetic circuit on barrel (4) surface of surveying festival (3) and be located the sensor (31) outside, every sensor (31) all are connected with a numerical control box (21) through data cable, its characterized in that: adjacent cylinders (4) are connected through a universal joint;
the universal joint includes: the novel plastic rubber sleeve comprises a front mounting seat (5) connected with one cylinder body (4), a rear mounting seat (6) connected with the other cylinder body (4) and at least three chains (7) connected between the front mounting seat (5) and the rear mounting seat (6), wherein the chains (7) are arranged at equal intervals along the circumferential direction and are connected with the outer side edges of one end of each of the front mounting seat (5) and the rear mounting seat (6), so that a central channel (8) is formed by surrounding a plurality of chains (7), through holes communicated with the central channel (8) are formed in each of the front mounting seat (5) and the rear mounting seat (6), an elastic rubber sleeve (9) is coated outside the chains (7), and a through hole corresponding to the central channel (8) is formed in the center of the elastic rubber sleeve (9);
the front mounting seat (5) and the rear mounting seat (6) comprise a first connecting portion (101) connected with the chain (7) and a second connecting portion (102) connected with the cylinder body (4), a plurality of bumps (11) which are arranged at intervals along the circumferential direction and correspond to the chain (7) are arranged on the outer surface of one end of the first connecting portion (101) away from the second connecting portion (102), the end portion of the chain (7) is sleeved on the bumps (11) and is in welded connection with the bumps (11), the outer diameter of one end of the second connecting portion (102) close to the first connecting portion (101) is larger than the outer diameter of the first connecting portion (101), so that a step groove (12) is formed between the second connecting portion (102) and the first connecting portion (101), and the end portion of the elastic rubber sleeve (9) is embedded into the step groove (12) and is attached to the end face of the second connecting portion (102).
2. The magnetic flux leakage detector according to claim 1, wherein: the sensor (31) is a Hall sensor.
3. The magnetic flux leakage detector according to claim 1 or 2, characterized in that: the battery section (1) and the switching box section (2) are respectively provided with 2 sections.
4. The magnetic flux leakage detector according to claim 1, wherein: the first connecting part (101) and the second connecting part (102) are welded or integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111506916.0A CN114166931B (en) | 2021-12-10 | 2021-12-10 | Magnetic leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111506916.0A CN114166931B (en) | 2021-12-10 | 2021-12-10 | Magnetic leakage detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114166931A CN114166931A (en) | 2022-03-11 |
| CN114166931B true CN114166931B (en) | 2024-03-15 |
Family
ID=80485397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111506916.0A Active CN114166931B (en) | 2021-12-10 | 2021-12-10 | Magnetic leakage detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114166931B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5864232A (en) * | 1996-08-22 | 1999-01-26 | Pipetronix, Ltd. | Magnetic flux pipe inspection apparatus for analyzing anomalies in a pipeline wall |
| CN211717374U (en) * | 2019-12-25 | 2020-10-20 | 达州帝泰克检测设备有限公司 | Deformation detection sensor for pipeline |
| CN212274854U (en) * | 2019-12-25 | 2021-01-01 | 达州帝泰克检测设备有限公司 | Internal detector for pipeline deformation |
| CN212622395U (en) * | 2020-07-27 | 2021-02-26 | 达州帝泰克检测设备有限公司 | Stable pipeline magnetic leakage detection device |
| CN112903810A (en) * | 2020-03-16 | 2021-06-04 | 苏州帝泰克检测设备有限公司 | Omnibearing pipeline magnetic leakage detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017197505A1 (en) * | 2016-05-20 | 2017-11-23 | Desjardins Integrity Ltd. | System and method for detecting and characterizing defects in a pipe |
-
2021
- 2021-12-10 CN CN202111506916.0A patent/CN114166931B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5864232A (en) * | 1996-08-22 | 1999-01-26 | Pipetronix, Ltd. | Magnetic flux pipe inspection apparatus for analyzing anomalies in a pipeline wall |
| CN211717374U (en) * | 2019-12-25 | 2020-10-20 | 达州帝泰克检测设备有限公司 | Deformation detection sensor for pipeline |
| CN212274854U (en) * | 2019-12-25 | 2021-01-01 | 达州帝泰克检测设备有限公司 | Internal detector for pipeline deformation |
| CN112903810A (en) * | 2020-03-16 | 2021-06-04 | 苏州帝泰克检测设备有限公司 | Omnibearing pipeline magnetic leakage detector |
| CN212622395U (en) * | 2020-07-27 | 2021-02-26 | 达州帝泰克检测设备有限公司 | Stable pipeline magnetic leakage detection device |
Non-Patent Citations (1)
| Title |
|---|
| 管道漏磁检测技术及应用;武万辉;郭勇;王同德;杨寒;;管道技术与设备;20090315(第02期);全文 * |
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| CN114166931A (en) | 2022-03-11 |
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