A flexibly adjustable pipeline eddy current array probe

Abstract

The application discloses a flexible adjustable pipeline eddy current detection array probe and relates to the field of array probes, which comprises a plurality of sliding blocks, and the inside of the sliding blocks is provided with a first sliding variable diameter rod, a rocker and a second sliding variable diameter rod, one end of the first sliding variable diameter rod is inserted into one end of the second sliding variable diameter rod, and the first sliding variable diameter rod and the second sliding variable diameter rod push the sliding block to move outward when being close to each other. The eddy current detection unit and the circuit board are arranged, the electromagnetic eddy current generator is connected to the power supply when detection is performed, the magnetic force generated by the electromagnetic eddy current generator is opposite to the adsorbing magnet at the moment, so that the eddy current detection unit is pushed to move outward until the eddy current detection unit is further aligned and attached to the inner wall of the pipeline, the detection probe is attached to the inside of the pipeline at the moment, and the pipeline is excited and magnetized through the magnetizing sheet, and then the inside of the pipeline is detected through the detection probe, so that the detection effect is improved.

Description

Technical Field

[0001] This invention relates to the field of array probes, specifically to a flexibly adjustable eddy current detection array probe for pipes. Background Technology

[0002] During long-term use, pipelines may develop defects such as corrosion, cracks, and perforations. If these defects are not detected and addressed in time, they may lead to serious accidents such as leaks and explosions, causing huge economic losses and environmental pollution, and even threatening human lives. For this reason, ultrasonic testing devices are used. An array probe in ultrasonic testing is a probe system composed of multiple small sensor elements. Each sensor element (also called an array element) can independently emit and receive ultrasonic signals. Through the coordinated work of these elements, the array probe can provide higher resolution and more flexible testing methods than traditional single-element probes.

[0003] However, existing technologies, such as the eddy current array probe for detecting surface defects of complex conductive structures disclosed in Chinese Patent No. CN103487502B, consist of multiple eddy current probes arranged in a grid pattern in the horizontal and vertical directions; a mechanical elastic structure is provided between two adjacent eddy current probes; an excitation coil and a sensor are installed on the bottom end of each eddy current probe facing the surface of the object being tested, and a shielding layer is provided around the excitation coil and sensor in the non-transmitting or receiving directions.

[0004] Although existing technologies can detect different locations in different pipes, the probe position is fixed during the detection process. Different fixing structures are required when detecting pipes of different diameters, which is inconvenient. Secondly, existing excitation coils cannot be tightly attached to the inside of the pipe during the detection process, resulting in poor coil magnetization. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a flexibly adjustable eddy current detection array probe for pipes to solve the technical problem.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flexibly adjustable eddy current detection array probe for pipelines, comprising multiple sets of sliding blocks, wherein a first sliding variable diameter rod, a rocker arm, and a second sliding variable diameter rod are disposed inside the sliding blocks. One end of the first sliding variable diameter rod is inserted into one end of the second sliding variable diameter rod. When the first and second sliding variable diameter rods approach each other, they push the sliding blocks to move outward. Multiple sets of eddy current detection units are installed on the outer wall of the sliding blocks, and a circuit board matching the eddy current detection units is installed inside the sliding blocks. Two sets of locking plates and six sets of sleeves are connected to the top of the circuit board. Three sets of sleeves are evenly distributed on one set of locking plates. Each set of eddy current detection units is located inside the sleeves. An adsorption magnet is installed at the bottom of the inside of the sleeve. An electromagnetic eddy current generator is installed inside the eddy current detection unit. The electromagnetic eddy current generator is electrically connected to the locking plates, and the magnetic force generated by the electromagnetic eddy current generator is opposite to that of the adsorption magnet.

[0007] By adopting the above technical solution, the position of the sliding block can be easily adjusted to adapt to pipes of different diameters. After adjustment, the eddy current detection unit can be finely adjusted by the electromagnetic eddy current generator, thereby further improving the detection effect. During the detection process, the pipe is excited and magnetized by the electromagnetic eddy current generator, which facilitates the detection probe to perform the detection.

[0008] The present invention is further configured such that a locking groove is provided at the bottom end of the sliding block, a first push block is connected to the outer wall of the first sliding variable diameter rod, a second push block is connected to the outer wall of the second sliding variable diameter rod, and the locking groove is engaged with the first push block and the bidirectional lead screw.

[0009] Preferably, the sliding block can be conveniently limited by the locking groove, thereby improving the stability of the sliding block's movement.

[0010] The invention is further configured such that a bidirectional lead screw is connected to one side of the rocker arm, the bidirectional lead screw passing through the first sliding variable diameter rod and the second sliding variable diameter rod, and the rocker arm drives the first sliding variable diameter rod and the second sliding variable diameter rod to move closer or further apart through the bidirectional lead screw.

[0011] Preferably, it is convenient.

[0012] The present invention is further configured such that one end of the first sliding variable diameter rod is connected to a plug rod, and one end of the second sliding variable diameter rod is provided with a slot, wherein the plug rod is inserted into the slot to limit the mutual positioning of the first sliding variable diameter rod and the second sliding variable diameter rod.

[0013] Preferably, the first sliding variable diameter rod and the second sliding variable diameter rod can be easily inserted into each other to adjust the spacing.

[0014] The present invention is further configured such that a wire extends below the eddy current detection unit, and the eddy current detection unit is electrically connected to the circuit board through the wire.

[0015] Preferably, it is convenient to connect the eddy current detection unit to power.

[0016] The present invention is further configured such that a support plate is connected to the bottom end of the eddy current detection unit, the support plate is made of metal, a detection probe is connected to the top end of the eddy current detection unit, a pad is connected to the outside of the detection probe, and the detection probe is fixedly connected to the eddy current detection unit through the pad.

[0017] Preferably, the eddy current detection unit can be supported by a support plate and interact with the adsorption magnet to limit and fix the eddy current detection unit when the power is off.

[0018] The present invention is further configured such that a lower clamping plate is connected to the bottom end of the electromagnetic eddy current generator, a support plate and an electromagnetic eddy current generator are installed inside the eddy current detection unit, a magnetizing plate is connected to the top end of the electromagnetic eddy current generator, an upper clamping plate is connected to the top end of the electromagnetic eddy current generator, and multiple sets of legs of the magnetizing plate extend to the top end of the eddy current detection unit and are evenly distributed around the detection probe.

[0019] Preferably, it facilitates the excitation and magnetization of the inner wall of the pipe, thereby improving the detection effect.

[0020] In summary, the present invention has the following main beneficial effects:

[0021] 1. The present invention, through the setting of a first sliding variable diameter rod, a second sliding variable diameter rod, and a sliding block, enables the rocker arm to drive the bidirectional lead screw to rotate during the detection process, thereby causing the first sliding variable diameter rod and the second sliding variable diameter rod to move closer to each other, thus pushing the sliding block to move outward until it fits against the inner wall of the pipe. This allows the eddy current detection unit to fit tightly against the inner wall of the pipe, facilitating the detection of different pipes.

[0022] 2. The present invention also features an eddy current detection unit and circuit board. When the electromagnetic eddy current generator is powered on during detection, the magnetic force generated by the electromagnetic eddy current generator is opposite to that of the adsorption magnet, thereby pushing the eddy current detection unit to move outward until the eddy current detection unit is further aligned and in contact with the inner wall of the pipe. At this point, the detection probe is in contact with the inside of the pipe, and the pipe is excited and magnetized by the magnetizing sheet. Subsequently, the detection probe is used to detect the inside of the pipe, thus improving the detection effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2This is a schematic diagram of the connection structure between the first sliding variable diameter rod and the second sliding variable diameter rod of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection between the sliding block and the sliding variable diameter rod of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the first sliding variable diameter rod of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the second sliding variable diameter rod of the present invention;

[0028] Figure 6 This is a cross-sectional structural diagram of the sliding block of the present invention;

[0029] Figure 7 This is a schematic diagram of the eddy current detection unit and circuit board mounting structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the internal structure of the eddy current detection unit of the present invention;

[0031] Figure 9 This is a schematic diagram of the exploded structure of the electromagnetic eddy current generator of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of the magnetized sheet of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Sliding block; 101. Engaging groove; 2. First sliding variable diameter rod; 201. First push block; 202. Insert rod; 3. Rocker arm; 301. Two-way lead screw; 4. Second sliding variable diameter rod; 401. Second push block; 402. Slot; 5. Eddy current detection unit; 501. Wire; 502. Support plate; 503. Electromagnetic eddy current generator; 5031. Lower clamping plate; 5032. Electromagnet; 5033. Hollow pipe; 5034. Magnetized sheet; 5035. Upper clamping plate; 504. Pad; 505. Detection probe; 6. Circuit board; 601. Engaging plate; 602. Sleeve; 603. Adsorption magnet. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of the present invention will now be described.

[0037] Example:

[0038] Please see Figures 1 to 6 The device includes multiple sets of sliding blocks 1, and the sliding block 1 is internally provided with a first sliding variable diameter rod 2, a rocker arm 3 and a second sliding variable diameter rod 4. One end of the first sliding variable diameter rod 2 is inserted into one end of the second sliding variable diameter rod 4. The bottom end of the sliding block 1 is provided with a locking groove 101. The outer wall of the first sliding variable diameter rod 2 is connected to a first push block 201, and the outer wall of the second sliding variable diameter rod 4 is connected to a second push block 401. The locking groove 101 is engaged with the first push block 201 and the bidirectional screw 301. When the first sliding variable diameter rod 2 and the second sliding variable diameter rod 4 are close together, they push the sliding block 1 to move outward, which can easily adjust the position of the sliding block 1, so that the sliding block 1 fits the inside of pipes of different diameters.

[0039] Please see Figures 7 to 10 Multiple sets of eddy current detection units 5 are installed on the outer wall of the sliding block 1, and a circuit board 6 matching the eddy current detection units 5 is installed inside the sliding block 1. Two sets of locking plates 601 and six sets of sleeves 602 are connected to the top of the circuit board 6. Three sets of sleeves 602 are evenly distributed on one set of locking plates 601. Each set of eddy current detection units 5 is located inside the sleeve 602. An adsorption magnet 603 is installed at the bottom of the sleeve 602. A support plate 502 and an electromagnetic eddy current generator 503 are installed inside the eddy current detection unit 5. A wire 501 extends below the eddy current detection unit 5, and the eddy current detection unit 5 is electrically connected to the circuit board 6 through the wire 501. The support plate 502 is made of metal, and the top of the eddy current detection unit 5 is connected to... The detection probe 505 is connected to a pad 504 on its outer side. The detection probe 505 is fixedly connected to the eddy current detection unit 5 through the pad 504. An electromagnetic eddy current generator 503 is installed inside the eddy current detection unit 5. A lower clamping plate 5031 is connected to the bottom of the electromagnetic eddy current generator 503. A magnetizing plate 5034 is connected to the top of the electromagnetic eddy current generator 503. An upper clamping plate 5035 is connected to the top of the electromagnetic eddy current generator 503. Multiple sets of legs of the magnetizing plate 5034 extend to the top of the eddy current detection unit 5 and are evenly distributed around the detection probe 505. The electromagnetic eddy current generator 503 is electrically connected to the clamping plate 601. The magnetic force generated by the electromagnetic eddy current generator 503 is opposite to that of the adsorption magnet 603.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figures 1 to 3A two-way lead screw 301 is connected to one side of the rocker arm 3. The two-way lead screw 301 passes through the first sliding variable diameter rod 2 and the second sliding variable diameter rod 4. The rocker arm 3 drives the first sliding variable diameter rod 2 and the second sliding variable diameter rod 4 to move closer or further apart through the two-way lead screw 301. One end of the first sliding variable diameter rod 2 is connected to a plug rod 202. One end of the second sliding variable diameter rod 4 has a slot 402. The plug rod 202 is inserted into the slot 402 to limit the movement of the first sliding variable diameter rod 2 and the second sliding variable diameter rod 4. The position of the first sliding variable diameter rod 2 and the second sliding variable diameter rod 4 can be easily adjusted by the rocker arm 3.

[0041] Before the equipment enters the pipeline for operation, the actual inner diameter of the target pipeline needs to be measured. A linkage structure between the first sliding diameter reducer 2 and the second sliding diameter reducer 4 is used, employing lever transmission to adjust the radial dimension. This ensures uniform and stable contact pressure between the array-type detection probe and the inner wall of the pipeline, guaranteeing the reliability of the detection signal transmission and the accuracy of data acquisition. Clockwise rotation of the rocker arm 3 converts the rotational motion into linear motion, synchronously driving the annular first sliding diameter reducer 2 and the second sliding diameter reducer 4 to move towards the center along the built-in bidirectional lead screw 301. The first push block 201 and the second... The two push blocks 401 slide synchronously towards the center along the locking groove 101, pushing the sliding block 1 to expand. When the pipe diameter decreases, the rocker arm 3 is rotated counterclockwise, and the transmission system works in the opposite direction. This can simultaneously drive the annular first sliding diameter reducing rod 2 and the second sliding diameter reducing rod 4 to move to both sides along the built-in bidirectional lead screw 301, so that the first push block 201 and the second push block 401 slide synchronously outward along the guide groove, causing the sliding block 1 to contract radially. After adjusting to the target pipe diameter, the rocker arm 3 can be disassembled and the lead screw clamping device can be used to lock the T-shaped lead screw to prevent dimensional deviation caused by vibration or external force interference during the detection process, thus ensuring measurement accuracy.

[0042] During the testing process, as the sliding block 1 presses tightly against the inner wall of the pipe, the eddy current detection unit 5 is powered on. The electromagnetic eddy current generator 503 is then energized, generating a magnetic force. This magnetic force is opposite to that of the lower adsorption magnet 603. This magnetic force pushes the eddy current detection unit 5 outwards until the detection probe 505 is in contact with the inner wall of the pipe. At this point, the magnetized sheet 5034 adheres to the inside of the pipe, and the magnetic force of the electromagnetic eddy current generator 503 is transmitted to the inside of the pipe through the magnetized sheet 5034, exciting and magnetizing the pipe. The detection probe 505 then detects the magnetized position of the pipe, effectively improving the testing results. After the testing is completed, the power to the electromagnetic eddy current generator 503 is cut off. The adsorption magnet 603 then attracts the metal support plate 502, causing the eddy current detection unit 5 to return to the inside of the sleeve 602, thus protecting the eddy current detection unit 5.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A flexibly adjustable eddy current detection array probe for pipes, comprising multiple sets of sliding blocks (1), wherein the sliding blocks (1) are internally provided with a first sliding variable diameter rod (2), a rocker arm (3), and a second sliding variable diameter rod (4), characterized in that: One end of the first sliding variable diameter rod (2) is inserted into one end of the second sliding variable diameter rod (4). When the first sliding variable diameter rod (2) and the second sliding variable diameter rod (4) approach each other, the sliding block (1) is pushed to move outward. Multiple sets of eddy current detection units (5) are installed on the outer wall of the sliding block (1), and a circuit board (6) matching the eddy current detection unit (5) is installed inside the sliding block (1). The top of the circuit board (6) is connected to two sets of locking plates (601) and six sets of sleeves (602). Three sets of sleeves (602) are evenly distributed on a set of locking plates (601). Each set of eddy current detection units (5) is located inside the sleeve (602). An adsorption magnet (603) is installed at the bottom of the sleeve (602). An electromagnetic eddy current generator (503) is installed inside the eddy current detection unit (5). The electromagnetic eddy current generator (503) is electrically connected to the locking plate (601). The magnetic force generated by the electromagnetic eddy current generator (503) is opposite to that of the adsorption magnet (603).

2. The flexibly adjustable eddy current detection array probe for pipes according to claim 1, characterized in that: The bottom end of the sliding block (1) is provided with a locking groove (101), the outer wall of the first sliding variable diameter rod (2) is connected to a first push block (201), the outer wall of the second sliding variable diameter rod (4) is connected to a second push block (401), and the locking groove (101) is engaged with the first push block (201) and the bidirectional lead screw (301).

3. The flexibly adjustable eddy current detection array probe for pipes according to claim 1, characterized in that: One side of the rocker arm (3) is connected to a bidirectional lead screw (301), which passes through the first sliding variable diameter rod (2) and the second sliding variable diameter rod (4). The rocker arm (3) drives the first sliding variable diameter rod (2) and the second sliding variable diameter rod (4) to move closer or further apart through the bidirectional lead screw (301).

4. The flexibly adjustable eddy current detection array probe for pipes according to claim 1, characterized in that: One end of the first sliding variable diameter rod (2) is connected to a plug rod (202), and one end of the second sliding variable diameter rod (4) is provided with a slot (402). The plug rod (202) is inserted into the slot (402) to limit the movement of the first sliding variable diameter rod (2) and the second sliding variable diameter rod (4).

5. The flexibly adjustable eddy current detection array probe for pipes according to claim 1, characterized in that: A wire (501) extends below the eddy current detection unit (5), and the eddy current detection unit (5) is electrically connected to the circuit board (6) through the wire (501).

6. The flexibly adjustable eddy current detection array probe for pipelines according to claim 1, characterized in that: The bottom end of the eddy current detection unit (5) is connected to a support plate (502), which is made of metal. The top end of the eddy current detection unit (5) is connected to a detection probe (505), and the outer side of the detection probe (505) is connected to a pad (504). The detection probe (505) is fixedly connected to the eddy current detection unit (5) through the pad (504).

7. The flexibly adjustable eddy current detection array probe for pipelines according to claim 1, characterized in that: The bottom of the electromagnetic eddy current generator (503) is connected to a lower clamping plate (5031). The eddy current detection unit (5) is equipped with a support plate (502) and an electromagnetic eddy current generator (503). The top of the electromagnet (5032) is connected to a magnetizing plate (5034). The top of the electromagnetic eddy current generator (503) is connected to an upper clamping plate (5035). Multiple sets of legs of the magnetizing plate (5034) extend to the top of the eddy current detection unit (5) and are evenly distributed around the detection probe (505).

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