CN111551629A - Array type eddy current detection probe with hydraulic adjusting device and detection method thereof - Google Patents
Array type eddy current detection probe with hydraulic adjusting device and detection method thereof Download PDFInfo
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- CN111551629A CN111551629A CN202010489716.8A CN202010489716A CN111551629A CN 111551629 A CN111551629 A CN 111551629A CN 202010489716 A CN202010489716 A CN 202010489716A CN 111551629 A CN111551629 A CN 111551629A
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- 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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
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Abstract
The invention discloses an array type eddy current detection probe with a hydraulic adjusting device and a detection method thereof. The utility model provides a hydraulic pressure adjusting device of array eddy current testing probe for metal surface no trace is detected a flaw in the electromagnetic eddy current testing, hydraulic pressure adjusting device includes that a hydraulic pressure adjusts chamber (1) and more than one hydraulic pressure post (11), hydraulic pressure post (11) array distributes in the surface of hydraulic pressure adjusts chamber (1), and each hydraulic pressure post (11) are used for corresponding one or a set of probe coil. The invention also discloses an array type eddy current testing probe with the hydraulic adjusting device and an array type eddy current testing method with the hydraulic adjusting device. The invention better solves the difficult problem of uneven stress of the probe in array eddy current detection, so that the array probe covers the curved surface of the test sample with the most balanced elastic pressure to achieve the best test effect.
Description
Technical Field
The invention relates to the technical field of eddy current sensor detection, relates to an array eddy current detection probe for electromagnetic eddy current detection of metal surface traceless flaw detection, and particularly relates to an array eddy current detection probe and a detection method thereof.
Background
The progress of nondestructive testing technology promotes the development of a life-cycle safety system in the fields of aviation, aerospace, electric power, petrochemical industry, metallurgy, machinery and the like. As one of five conventional detection methods, the eddy current detection technology has also undergone new technological development processes such as single-frequency, single-channel, multi-frequency, multi-channel, spectrum analysis, large-scale array eddy current detection technology, and the like. By definition in country-relevant terms, up to four and more than four detection channels can be considered array vortices.
The array eddy current mainly has the main function of quickly and effectively completing the detection purpose of the detected object, and particularly adopts a large-scale eddy current imaging technology of hundreds of channels and thousands of channels for parts with different curved surfaces, so that the detection speed is greatly accelerated, and the discontinuity evaluation of the defect trend and the like is facilitated. The spring structure is a conventional method, but is limited by inherent parameters of the spring, the stress of each probe is not uniform, and coils of each probe cannot be uniformly attached to the curved surface of the tested metal.
Aiming at the problems of the defects, the invention adopts the following technical scheme to improve.
Disclosure of Invention
The invention aims to provide an array type eddy current testing probe with a hydraulic adjusting device and a testing method thereof, which solve the problem of uneven stress of each probe of the array type eddy current testing mentioned in the background technology, so as to achieve the purpose that each probe coil of the array type eddy current testing device is attached to the curved surface of a tested sample with the same and balanced elasticity.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the hydraulic adjusting device comprises a hydraulic adjusting cavity and more than one hydraulic column, the hydraulic columns are distributed on the surface of the hydraulic adjusting cavity in an array mode, and each hydraulic column is used for corresponding to one probe coil.
The hydraulic adjusting cavity and the hydraulic column are made of deformable soft materials such as soft rubber, and the hydraulic adjusting cavity and the hydraulic column are connected to form an integrally closed communicating structure capable of enabling liquid or gas to flow.
The hydraulic adjusting cavity and the hydraulic columns are respectively arranged into one of communicated geometric structures such as a square body, a semi-sphere, a cylinder or a table column body, and the hydraulic columns are distributed on at least one outer surface of the geometric structure of the hydraulic adjusting cavity in an array mode.
The hydraulic pressure adjusting device is filled with liquid or gas with excellent fluidity.
In a preferred embodiment, the hydraulic adjusting device is an air bag filled with air inside, and the hydraulic adjusting cavity is a large air bag and a plurality of small hydraulic column air bags distributed on the surface of the large air bag of the hydraulic adjusting cavity.
Furthermore, the hydraulic pressure adjusting device further includes a pressure adjusting device for supplying the liquid or gas when the elastic force is insufficient and discharging a part of the liquid or gas when the elastic force is too strong to deform the hydraulic pressure adjusting device.
Wherein, the pressure regulating device is a pressure regulating pump or a pressure regulating valve.
The invention also discloses an array type eddy current detection probe with a hydraulic adjusting device, which is used for metal surface traceless flaw detection in electromagnetic eddy current detection and comprises the hydraulic adjusting device and a plurality of array probe coils; the hydraulic adjusting device comprises a hydraulic adjusting cavity and more than one hydraulic column, the hydraulic columns are distributed on the surface of the hydraulic adjusting cavity in an array mode, and each hydraulic column is used for corresponding to one probe coil;
the hydraulic adjusting cavity and the hydraulic column are made of deformable soft materials such as soft rubber and the like, and are connected into an integrally closed communicating structure capable of enabling liquid or gas to flow; when the probe detects a test sample, the array probe coils are communicated and deformed by the hydraulic adjusting cavity and the hydraulic column, so that the array probe coils are arranged to form a curved surface which is adaptive to the surface of the test sample, and each array probe coil is attached to the surface of the test sample by the same elasticity due to the principle of a connector.
The hydraulic adjusting cavity and the hydraulic columns are respectively arranged into one of communicated geometric structures such as a square body, a semi-sphere, a cylinder or a table column body, and the hydraulic columns are distributed on at least one outer surface of the geometric structure of the hydraulic adjusting cavity in an array mode.
The hydraulic pressure adjusting device is filled with liquid or gas having excellent fluidity.
The hydraulic adjusting device is an air bag filled with air, and the hydraulic adjusting cavity is a large air bag and a plurality of hydraulic column small air bags distributed on the surface of the large air bag of the hydraulic adjusting cavity.
The hydraulic pressure adjusting device also comprises a pressure adjusting device, liquid or gas is supplemented when the elastic force is insufficient, and part of liquid or gas is discharged when the elastic force is too strong and is not enough to deform the hydraulic pressure adjusting device.
The pressure regulating device is a pressure regulating pump or a pressure regulating valve.
The invention also discloses an array eddy current testing method with a hydraulic adjusting device, which is used for metal surface traceless flaw detection in electromagnetic eddy current testing, and comprises the hydraulic adjusting device, a plurality of array probe coils, a test sample surface, a hydraulic adjusting device rear baffle plate and a pressure adjusting device, wherein the hydraulic adjusting device comprises a hydraulic adjusting cavity and a hydraulic column which are made of deformable soft materials such as soft rubber, and the steps are as follows:
a. attaching the array eddy current testing probe with the hydraulic adjusting device to the surface of a test sample, and judging the attaching degree of the coil of the array eddy current testing probe to the surface of the test sample;
b. when the coils of the array eddy current detection probe are abutted against a baffle plate at the rear side of the hydraulic adjusting device, the hydraulic adjusting device is judged to be insufficient in pressure, the coils of the array eddy current detection probe are supported by insufficient elasticity, and the pressure adjusting device is used for supplementing liquid or gas; when the coil of the array eddy current detection probe is not tightly contacted with the surface of the test sample, the elasticity of the hydraulic adjusting device is judged to be too strong and is not enough to deform the hydraulic adjusting device, and part of liquid or gas is discharged by the pressure adjusting device;
c. when all the coils of the array eddy current detection probe cover the surface of a test sample and do not collide with a baffle plate at the rear side of the hydraulic adjusting device, the array eddy current detection probe performs scanning eddy current detection on the test sample, and at the moment, all the coils of the array eddy current detection probe press the surface of the test sample with the same and balanced elasticity, so that the whole scanning detection process is stable and is not easy to shake and lift;
d. and collecting signals scanned and detected by the array type eddy current detection probe for data processing, transmitting the signals to the eddy current imaging detector, and displaying and storing detection results.
According to the technical scheme, the invention has the beneficial effects that:
the hydraulic adjusting device of the array eddy current sensor probe adopted by the invention has independent hydraulic column structures, and particularly solves the problem of uneven stress of the probe in array eddy current detection when the hydraulic adjusting device is arranged into a micro-airbag structure, thereby achieving an effective detection result. The desired probe spring force is achieved by adjusting the balloon pressure (e.g., by collapsing or supplementing and releasing a portion of the liquid or gas).
In addition, because the hydraulic adjusting cavity and the hydraulic columns are of an integrally closed communicating structure in which liquid or gas flows, when the array probe contacts the curved surface of the test sample, due to the flowing of the liquid or the gas, even if the curved surfaces of different test samples cause the deformation of the hydraulic adjusting cavity and the hydraulic columns, the elasticity of each hydraulic column is still kept the same, so that the array probe covers the curved surface of the test sample with the most balanced pressure, and the optimal test effect is achieved.
Moreover, the pressure adjusting device adjusts the elastic force of the whole hydraulic adjusting device by supplementing and releasing partial liquid or gas, so that each array type probe does not collide against the rear plate of the hydraulic adjusting cavity because of too small hydraulic elastic force and is not influenced by the hydraulic pressure, or does not contact the curved surface of the test sample because of too large hydraulic elastic force.
Drawings
Fig. 1 is a schematic view of a hydraulic pressure adjusting apparatus according to embodiment 1 of the present invention.
Fig. 2 is a schematic view of a hydraulic pressure adjusting device attached to a surface of a curved surface test sample in eddy current testing according to embodiment 1 of the present invention.
Fig. 3 is a schematic bottom view of an array eddy current inspection probe in embodiment 1 of the present invention.
Fig. 4 is a schematic view of a hydraulic pressure adjusting apparatus in embodiment 2 of the present invention.
Fig. 5 is a schematic view illustrating that a hydraulic pressure adjusting device is attached to a surface of a curved surface test sample in eddy current testing in embodiment 2 of the present invention.
Fig. 6 is a schematic view of the deformation adjusting elastic force of the hydraulic adjusting cavity when the hydraulic adjusting device is attached to the surface of the curved surface test sample in eddy current testing in embodiment 2 of the present invention.
Fig. 7 is a schematic bottom view of an array eddy current inspection probe in embodiment 2 of the present invention.
In the figure, 1 hydraulic adjusting cavity, 2 array probe coils, 3 test samples, 4 hydraulic adjusting device rear side baffles, 5 pressure adjusting devices, 11 hydraulic columns and 31 test sample surfaces.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example 1, as shown in figures 1, 2 and 3,
the invention discloses a hydraulic adjusting device of an array eddy current testing probe, which is used for metal surface traceless flaw detection in electromagnetic eddy current testing, and comprises a hydraulic adjusting cavity 1 and more than one hydraulic column 11, wherein the hydraulic columns 11 are distributed on the surface of the hydraulic adjusting cavity 1 in an array manner, and each hydraulic column 11 is used for corresponding to a probe coil; the hydraulic adjusting cavity 1 and the hydraulic column 11 are made of soft deformable materials such as soft rubber, and the hydraulic adjusting cavity 1 and the hydraulic column 11 are connected to form an integrally closed communication structure capable of enabling liquid or gas to flow.
The hydraulic adjusting cavity 1 is a cylinder, and the hydraulic columns 11 of the same cylinder are respectively arranged on the lower surface of the outer side of the cylinder hydraulic adjusting cavity 1 in an array mode. The hydraulic columns 11 and the probe coils are distributed in a square arrangement mode.
Wherein, the interior of the hydraulic pressure adjusting device is filled with gas.
In one embodiment, the hydraulic adjusting device is an air bag filled with air, and the hydraulic adjusting cavity 1 is a large air bag and a plurality of small air bags of hydraulic columns 11 distributed on the surface of the large air bag of the hydraulic adjusting cavity 1.
Furthermore, the hydraulic pressure adjusting device further comprises a pressure adjusting device 5 for supplying liquid or gas when the elastic force is insufficient and for discharging part of the liquid or gas when the elastic force is too strong and insufficient to deform the hydraulic pressure adjusting device.
Wherein the pressure regulating device 5 is a pressure regulating pump or a pressure regulating valve.
The array type eddy current testing probe with the hydraulic adjusting device in embodiment 1 is used for metal surface traceless flaw detection in electromagnetic eddy current testing, and comprises the hydraulic adjusting device and a plurality of array probe coils 2, wherein the hydraulic adjusting device comprises a hydraulic adjusting cavity 1 and more than one hydraulic column 11, the hydraulic columns 11 are distributed on the surface of the hydraulic adjusting cavity 1 in an array mode, and each hydraulic column 11 is used for corresponding to one probe coil;
the hydraulic adjusting cavity 1 and the hydraulic column 11 are made of deformable soft materials such as soft rubber, and the hydraulic adjusting cavity 1 and the hydraulic column 11 are connected to form an integrally closed communication structure capable of enabling liquid or gas to flow; when the probe detects a test sample 3, the array probe coils 2 are communicated and deformed by the hydraulic adjusting cavity 1 and the hydraulic column 11, so that the array probe coils 2 are arranged to form a curved surface adapted to the surface 31 of the test sample, and the array probe coils 2 are attached to the surface 31 of the test sample with the same elasticity due to the connector principle.
The hydraulic adjusting cavity 1 is a cylinder, and the hydraulic columns 11 which are also cylinders are respectively arranged on the lower surface of the outside of the cylinder hydraulic adjusting cavity 1 in an array mode. The hydraulic columns 11 and the probe coils are distributed in an arrangement mode.
The hydraulic adjusting device of the array type eddy current detection probe with the hydraulic adjusting device is filled with liquid or gas with excellent fluidity.
A hydraulic adjusting device of an array eddy current detection probe with a hydraulic adjusting device is an air bag filled with air inside, and a hydraulic adjusting cavity 1 is a large air bag and a plurality of small air bags of hydraulic columns 11 distributed on the surface of the large air bag of the hydraulic adjusting cavity 1.
The array eddy current detection probe with the hydraulic adjusting device also comprises a pressure adjusting device 5, liquid or gas is supplemented when the elasticity is insufficient, and partial liquid or gas is discharged when the elasticity is too strong and is not stronger than the deformation of the hydraulic adjusting device.
The pressure regulating device 5 is a pressure regulating pump or a pressure regulating valve.
The embodiment also discloses an array eddy current testing method with a hydraulic adjusting device, which is used for metal surface traceless flaw detection in electromagnetic eddy current testing, and comprises the hydraulic adjusting device, a plurality of array probe coils 2, a test sample 3 and a test sample surface 31, a rear baffle 4 of the hydraulic adjusting device and a pressure adjusting device 5, wherein the hydraulic adjusting device comprises a hydraulic adjusting cavity 1 and a hydraulic column 11 which are made of deformable soft materials such as soft rubber, and the steps are as follows:
a. attaching the array eddy current testing probe with the hydraulic adjusting device to the surface of a test sample, and judging the attaching degree of the coil of the array eddy current testing probe to the surface of the test sample;
b. when the coils of the array eddy current detection probe are abutted against a baffle plate at the rear side of the hydraulic adjusting device, the hydraulic adjusting device is judged to be insufficient in pressure, the coils of the array eddy current detection probe are supported by insufficient elasticity, and the pressure adjusting device is used for supplementing liquid or gas; when the coil of the array eddy current detection probe is not tightly contacted with the surface of the test sample, the elasticity of the hydraulic adjusting device is judged to be too strong and is not enough to deform the hydraulic adjusting device, and part of liquid or gas is discharged by the pressure adjusting device;
c. when all the coils of the array eddy current detection probe cover the surface of a test sample and do not collide with a baffle at the rear side of the hydraulic adjusting device, the array eddy current detection probe performs scanning eddy current detection on the test sample, and at the moment, all the coils of the array eddy current detection probe press the surface of the test sample with the same and balanced elasticity, so that the whole scanning detection process is stable and is not easy to shake and lift;
d. and collecting signals scanned and detected by the array type eddy current detection probe for data processing, transmitting the signals to the eddy current imaging detector, and displaying and storing detection results.
Because the hydraulic pressure adjusting cavity 1 and the hydraulic columns 11 are arranged in an integrally closed communication structure with liquid or gas flowing, when the array type probe contacts the curved surface of the test sample, due to the flowing of the liquid or the gas, even when the curved surfaces of different test samples cause the deformation of the hydraulic pressure adjusting cavity 1 and the hydraulic columns 11, the elasticity of each hydraulic column 11 is kept the same, so that the array type probe covers the curved surface of the test sample with the most balanced pressure, and the optimal test effect is achieved.
Moreover, the pressure adjusting device adjusts the elastic force of the whole hydraulic adjusting device by supplementing and releasing partial liquid or gas, so that each array type probe does not collide against the rear plate of the hydraulic adjusting cavity because of too small hydraulic elastic force and is not influenced by the hydraulic pressure, or does not contact the curved surface of the test sample because of too large hydraulic elastic force.
Example 2
As shown in fig. 4, 5, 6 and 7, the difference from embodiment 1 is: the hydraulic pressure adjusting chamber 1 is a semi-sphere, and has an effect of changing the elastic force of the hydraulic pressure adjusting means when collapsing the hydraulic pressure adjusting chamber 1 as shown in fig. 6, except that the same technical features and functions as those of embodiment 1 are provided. In addition, as shown in fig. 7, the hydraulic cylinders 11 and the probe coils are arranged in a circular pattern.
The above are two embodiments of the present invention. Furthermore, it is to be understood that all equivalent or simple changes in the structure, features and principles described in the present patent concepts are included in the scope of the present patent.
Claims (13)
1. The utility model provides a hydraulic pressure adjusting device of array eddy current testing probe for metal surface does not have trace and detects a flaw in the electromagnetism eddy current testing, its characterized in that:
the hydraulic adjusting device comprises a hydraulic adjusting cavity (1) and more than one hydraulic column (11), the hydraulic columns (11) are distributed on the surface of the hydraulic adjusting cavity (1) in an array mode, and each hydraulic column (11) is used for corresponding to one or a group of probe coils;
the hydraulic adjusting cavity (1) and the hydraulic column (11) are made of deformable soft materials such as soft rubber, and the hydraulic adjusting cavity (1) and the hydraulic column (11) are connected to form an integrally closed communication structure capable of enabling liquid or gas to flow.
2. The hydraulic adjusting device of the array type eddy current testing probe according to claim 1, wherein: the hydraulic adjusting cavity (1) and the hydraulic columns (11) are respectively arranged into one of communicated geometric structures such as a square body, a semi-sphere, a cylinder or a table column body, and the hydraulic columns (11) are distributed on at least one outer surface of the geometric structure of the hydraulic adjusting cavity (1) in an array mode.
3. The hydraulic pressure adjusting apparatus of an array eddy current inspection probe according to claim 1, 2 or 3, wherein: the hydraulic pressure adjusting device is filled with liquid or gas with excellent fluidity.
4. The hydraulic adjusting device of the array type eddy current testing probe according to claim 3, wherein: the hydraulic adjusting device is an air bag filled with air, and the hydraulic adjusting cavity (1) is a large air bag and a plurality of small air bags of hydraulic columns (11) distributed on the surface of the large air bag in the hydraulic adjusting cavity (1).
5. The hydraulic adjusting device of the array type eddy current testing probe according to claim 1, wherein: the hydraulic adjusting device also comprises a pressure adjusting device, liquid or gas is supplemented when the elastic force is insufficient, and partial liquid or gas is discharged when the elastic force is too strong and is not stronger than the deformation of the hydraulic adjusting device.
6. The hydraulic adjusting device of the array type eddy current testing probe according to claim 5, wherein: the pressure regulating device is a pressure regulating pump or a pressure regulating valve.
7. The utility model provides an array eddy current testing probe with hydraulic pressure adjusting device for metal surface seamless flaw detection in the electromagnetic eddy current testing, includes hydraulic pressure adjusting device, a plurality of array probe coil (2), its characterized in that:
the hydraulic adjusting device comprises a hydraulic adjusting cavity (1) and more than one hydraulic column (11), the hydraulic columns (11) are distributed on the surface of the hydraulic adjusting cavity (1) in an array mode, and each hydraulic column (11) is used for corresponding to one or a group of probe coils;
the hydraulic adjusting cavity (1) and the hydraulic column (11) are made of deformable soft materials such as soft rubber, and the hydraulic adjusting cavity (1) and the hydraulic column (11) are connected to form an integrally closed communication structure capable of enabling liquid or gas to flow;
when the probe detects a test sample (3), the array probe coils (2) are deformed due to the communication between the hydraulic adjusting cavity (1) and the hydraulic column (11), so that the array probe coils (2) are arranged to form a curved surface adaptive to the surface (31) of the test sample, and the array probe coils (2) are attached to the surface (31) of the test sample with the same elastic force due to the principle of a connector.
8. An array eddy current test probe with hydraulic adjustment device as claimed in claim 7, wherein: the hydraulic adjusting cavity (1) and the hydraulic columns (11) are respectively arranged into one of communicated geometric structures such as a square body, a semi-sphere, a cylinder or a table column body, and the hydraulic columns (11) are distributed on at least one outer surface of the geometric structure of the hydraulic adjusting cavity (1) in an array mode.
9. An array eddy current test probe with hydraulic adjustment device as claimed in claim 7, wherein: the hydraulic pressure adjusting device is filled with liquid or gas with excellent fluidity.
10. An array eddy current test probe with hydraulic adjustment device as claimed in claim 9, wherein: the hydraulic adjusting device is an air bag filled with air, and the hydraulic adjusting cavity (1) is a large air bag and a plurality of small air bags of hydraulic columns (11) distributed on the surface of the large air bag in the hydraulic adjusting cavity (1).
11. An array eddy current test probe with hydraulic adjustment device as claimed in claim 7, wherein: the hydraulic adjusting device also comprises a pressure adjusting device, liquid or gas is supplemented when the elastic force is insufficient, and partial liquid or gas is discharged when the elastic force is too strong and is not stronger than the deformation of the hydraulic adjusting device.
12. An array eddy current inspection probe with hydraulic adjustment device as claimed in claim 11, wherein: the pressure regulating device is a pressure regulating pump or a pressure regulating valve.
13. An array eddy current testing method with a hydraulic adjusting device is used for metal surface traceless flaw detection in electromagnetic eddy current testing, and comprises the hydraulic adjusting device, a plurality of array probe coils, a test sample and a test sample surface, a hydraulic adjusting device rear baffle plate and a pressure adjusting device, wherein the hydraulic adjusting device comprises a hydraulic adjusting cavity and a hydraulic column which are made of deformable soft materials such as soft rubber, and the steps are as follows:
a. attaching the array eddy current testing probe with the hydraulic adjusting device to the surface of a test sample, and judging the attaching degree of the coil of the array eddy current testing probe to the surface of the test sample;
b. when the coils of the array eddy current detection probe are abutted against a baffle plate at the rear side of the hydraulic adjusting device, the hydraulic adjusting device is judged to be insufficient in pressure, the coils of the array eddy current detection probe are supported by insufficient elasticity, and the pressure adjusting device is used for supplementing liquid or gas; when the coil of the array eddy current detection probe is not tightly contacted with the surface of the test sample, the elasticity of the hydraulic adjusting device is judged to be too strong and is not enough to deform the hydraulic adjusting device, and part of liquid or gas is discharged by the pressure adjusting device;
c. when all the coils of the array eddy current detection probe cover the surface of a test sample and do not collide with a baffle plate at the rear side of the hydraulic adjusting device, the array eddy current detection probe performs scanning eddy current detection on the test sample, and at the moment, all the coils of the array eddy current detection probe press the surface of the test sample with the same and balanced elasticity, so that the whole scanning detection process is stable and is not easy to shake and lift;
d. and collecting signals scanned and detected by the array type eddy current detection probe for data processing, transmitting the signals to the eddy current imaging detector, and displaying and storing detection results.
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| CN113776481B (en) * | 2021-09-14 | 2024-01-30 | 深圳市二郎神视觉科技有限公司 | Paint film thickness measuring method, paint film thickness measuring equipment and automatic automobile quality detecting system |
| CN116068044A (en) * | 2023-03-21 | 2023-05-05 | 辽宁锂想科技有限公司 | Multichannel multi-frequency weld joint flaw detection device |
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