Split type on-line eddy current probe

Abstract

The utility model relates to nondestructive testing technical field discloses a kind of eddy current probe of split type on-line flaw detection, including winding base, and fixedly connected with probe mechanism and fixed mechanism of winding base, and winding base top is also rotatably connected with metering wheel and winding wheel, fixedly connected with flaw detection positioning shaft, and flaw detection positioning shaft rotatably connected with flaw detection guide roller, and probe mechanism includes flaw detection inner chamber shell, and flaw detection inner chamber shell inside fixedly connected with ceramic tube and coil, and ceramic tube is crossed for tungsten wire, and coil generates eddy current signal, and the both ends of flaw detection inner chamber shell are connected with L type tracheal joint, for accessing high-pressure air, and wind wall is formed at the both ends of ceramic tube.The utility model solves the problem that probe is easily blocked by graphite milk, ensures flaw detection precision, and the stability of equipment connection is guaranteed by fixed mechanism, avoids the shaking interference when on-line flaw detection, realizes the efficient on-line detection of tungsten wire, reduces rewinding loss, and reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing technology, and in particular to a split-type online flaw detection eddy current probe. Background Technology

[0002] In the production and manufacturing process of metal wires such as tungsten wire, in order to ensure the physical properties and quality stability of the products, it is necessary to conduct strict non-destructive testing on the wires to eliminate products with internal defects. At present, the common testing method in the industry is to conduct offline rewinding testing after the wire drawing process. That is, the wires are transferred from one spool to another using specialized rewinding equipment and then tested by a probe.

[0003] Traditional offline rewinding flaw detection methods have significant technical defects and cost issues. The rewinding process directly increases the production process and time, resulting in limited production efficiency. At the same time, it requires additional investment in rewinding equipment and manual operation, which significantly increases production costs. More importantly, the fine tungsten wire is very susceptible to secondary damage during high-speed rewinding due to tension fluctuations or mechanical friction, leading to wire breakage or surface scratches. This not only causes unnecessary loss of raw materials, but also causes the entire spool of wire to be scrapped due to wire breakage, seriously affecting the yield.

[0004] While online flaw detection can avoid the problems caused by rewinding, directly integrating flaw detection equipment into existing wire drawing production lines faces challenges in structural compatibility. Existing flaw detection probes are designed as independent components and lack a dedicated fixing mechanism for a stable connection with the main body of the wire drawing machine. Under the vibration environment generated by the high-speed operation of the wire drawing machine, the probe is prone to displacement or shaking, causing the tungsten wire to deviate from the detection center, thus affecting the accuracy of the flaw detection data. Furthermore, the lack of an integrated guiding and cleaning structure makes it difficult to adapt to the working conditions of the production site. Existing technologies cannot achieve efficient online flaw detection while ensuring stability.

[0005] Therefore, this invention proposes a split-type online flaw detection eddy current probe to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems that existing traditional tungsten wire flaw detection equipment generally suffers from, such as low production efficiency and high material consumption due to the need for offline rewinding, and unstable connection between the probe and the wire drawing machine body during online detection and the lack of an effective cleaning mechanism that makes the probe prone to clogging and damage, this utility model aims to provide a split-type eddy current probe for online flaw detection with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a split-type online flaw detection eddy current probe, including: a winding base, and a probe mechanism fixedly connected to the front side of the top of the winding base; as well as a fixing mechanism behind the outer wall of the winding base, a meter wheel, a winding wheel, a flaw detection positioning shaft, and a flaw detection guide wheel on the top.

[0008] The probe mechanism includes an integrated probe connection plate, a probe mounting plate, a flaw detection inner cavity shell, and a ceramic tube and coil for core detection. The coil generates eddy current signals for detection.

[0009] Furthermore, the winding base serves as an overall support platform, with the fixing mechanism connected to external equipment via a specific mechanical structure on the rear side. The flaw detection positioning shaft and flaw detection guide wheel are located on the top right side of the winding base and work together to provide guidance. The probe mechanism is located on the top front side of the winding base. All components are combined through a reasonable spatial layout and mechanical connection method.

[0010] Preferably, a probe left-side fixing plate is fixedly connected to each of the inner sides of the flaw detection inner cavity shell, and a probe right-side fixing plate is fixedly connected to each of the outer sides of the flaw detection inner cavity shell. The ceramic tube passes through the probe left-side fixing plate and extends into the inner through hole of the probe right-side fixing plate. This multi-fixing structure can effectively prevent the ceramic tube from moving during operation and ensure the stability of the detection center.

[0011] Preferably, the end of the right-side fixing plate of the probe away from the inner cavity shell of the flaw detection is shaped like a flared mouth, and the inner diameter of the inner through hole of the right-side fixing plate of the probe is consistent with the outer diameter of the ceramic tube. The flared mouth shape design can guide the tungsten wire to pass through smoothly and reduce the resistance of wire passing.

[0012] Preferably, both ends of the flaw detection inner cavity shell are connected to L-shaped air pipe connectors, and one end of the flaw detection inner cavity shell is fixedly installed with an aviation plug and socket. The L-shaped air pipe connector is used to connect to external high-pressure air to form a clean air wall, and the aviation plug and socket is used for signal transmission.

[0013] Preferably, the coil is fixed to the outer wall of the ceramic tube by sealant. The adhesive effect of the sealant can prevent the coil from shifting due to equipment vibration, thus ensuring the stability and accuracy of the eddy current signal.

[0014] Preferably, the fixing mechanism includes a positioning plate fixedly connected to the rear side of the outer wall of the winding base. A movable plate is slidably connected inside the positioning plate. The sliding connection design of the movable plate enables the fixing mechanism to adapt to the installation requirements of different positions and has better adjustability.

[0015] Preferably, the inlay of the movable plate and the positioning plate is provided with positioning teeth and pawls. The pawls are fixedly connected to the inside of the positioning plate and rotatably connected to the outer wall of the movable plate. The pawls and positioning teeth engage with each other, and the mechanical engagement between the pawls and positioning teeth can provide a reliable anti-dislodgement function.

[0016] Preferably, screws are connected to both sides of the movable plate, and a second positioning plate is slidably connected to the outer wall of the screws. Nuts are threaded to both ends of the screws, and the nuts abut against the second positioning plate. By tightening the screws and nuts, the device can be firmly locked in the installation position to prevent shaking during operation.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem that graphite emulsion dust on the surface of the tungsten wire easily clogs the probe or interferes with the detection signal during the existing tungsten wire flaw detection process by connecting L-shaped air pipe joints to both ends of the flaw detection inner cavity shell and introducing high-pressure air to form air walls at both ends of the ceramic tube. It achieves the effect of effectively blowing off the surface deposits of the tungsten wire, preventing impurities from entering the ceramic tube, avoiding probe damage, and ensuring the detection accuracy of eddy current flaw detection.

[0018] 2. This utility model solves the problem that the existing flaw detection equipment and wire drawing machine body have a single connection and fixation method with insufficient stability and easy vibration interference by setting a fixing mechanism including positioning teeth, pawl and screw and nut cooperation at the rear of the winding base. It achieves the effect of using the mechanical engagement of pawl and positioning teeth to prevent falling off, cooperating with the screw to lock to improve the installation firmness, effectively preventing shaking during operation, and ensuring the stability and reliability of the online flaw detection process.

[0019] 3. This utility model integrates the probe mechanism with the winding wheel, the flaw detection guide wheel, and the metering wheel on the winding base to form a split online detection structure. This solves the problem of high material loss and high labor costs caused by the need to rewind the wire in the existing offline detection method. It achieves the effect of directly performing flaw detection during the wire drawing process, using the guide wheel to ensure the stable operation of the tungsten wire in the center of the probe, reducing wire rewinding loss, and reducing production and detection costs. Attached Figure Description

[0020] Figure 1 This is a perspective view of a split-type online flaw detection eddy current probe proposed in this utility model; Figure 2 This is a front view of a split-type online flaw detection eddy current probe proposed in this utility model; Figure 3 This is a rear view of a split-type online flaw detection eddy current probe proposed in this utility model; Figure 4 This is a top view of a split-type online flaw detection eddy current probe proposed in this utility model; Figure 5 This is a partial structural breakdown diagram of an eddy current probe for split-type online flaw detection proposed in this utility model; Figure 6 This is a partial structural diagram of a split-type online flaw detection eddy current probe proposed in this utility model.

[0021] Legend: 1. Winding base; 2. Probe mechanism; 201. Flaw detection inner cavity housing; 202. Left side fixing plate of probe; 203. Right side fixing plate of probe; 204. Ceramic tube; 205. Coil; 206. L-shaped air pipe connector; 207. Aviation plug and socket; 3. Fixing mechanism; 301. Positioning plate one; 302. Positioning teeth; 303. Moving plate; 304. Screw; 305. Pawl; 306. Nut; 307. Positioning plate two; 4. Meter wheel; 5. Winding wheel; 6. Probe connecting plate; 7. Probe mounting plate; 8. Flaw detection positioning shaft; 9. Flaw detection guide wheel. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 6 This utility model provides a split-type online flaw detection eddy current probe, which aims to solve the problems of existing tungsten wire flaw detection equipment lacking an effective online cleaning mechanism, resulting in easy clogging of the probe and unstable installation.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3The split-type online flaw detection eddy current probe includes a winding base 1 and a probe mechanism 2 fixedly connected to the front top of the winding base 1. The winding base 1 serves as the supporting mounting base for the overall structure. A fixing mechanism 3 is fixedly connected to the rear of the outer wall of the winding base 1. The fixing mechanism 3 is used to stably install the device on the main body of the wire drawing machine. In order to guide, pull, and measure the tungsten wire, a measuring wheel 4 is rotatably connected to the top left side of the winding base 1, a winding wheel 5 is rotatably connected to the top center of the winding base 1, and a flaw detection positioning shaft 8 is fixedly connected to the top right side of the winding base 1. The number of flaw detection positioning shafts 8 is set to multiple and arranged at intervals. A flaw detection guide wheel 9 is rotatably connected to the top of the outer wall of the flaw detection positioning shaft 8. The tungsten wire passes through the winding wheel 5 in sequence. The flaw detection guide wheel 9 enters the probe mechanism 2 for detection. The probe mechanism 2 includes a probe connecting plate 6 fixedly connected to the front top of the winding base 1. The probe connecting plate 6 provides stability for structural support. A probe mounting plate 7 is fixedly connected to the top right side of the probe connecting plate 6. A flaw detection inner cavity shell 201 is fixedly connected to the probe mounting plate 7. A ceramic tube 204 is fixedly connected to the middle of the inner wall of the flaw detection inner cavity shell 201. The ceramic tube 204 allows the tungsten wire to pass through. A coil 205 is fixedly connected to the outer wall of the ceramic tube 204. The coil 205 is used to generate an induced current to detect internal defects in the tungsten wire. By integrating the probe mechanism 2, the fixing mechanism 3, and the wire feeding assembly through the winding base 1, a compact and fully functional online flaw detection overall structure is formed.

[0025] Please refer to Figure 5 and Figure 6To address the issues of graphite emulsion dust clogging the probe on the tungsten filament surface, affecting flaw detection accuracy, and unstable internal probe fixation, the core of this embodiment lies in the refined design of the internal structure of the probe mechanism 2. A left-side fixing plate 202 is fixedly connected to each of the two inner sides of the flaw detection inner cavity shell 201, and a right-side fixing plate 203 is fixedly connected to each of the two outer sides of the flaw detection inner cavity shell 201. One left-side fixing plate 202 is provided on each of the two inner sides of the flaw detection inner cavity shell 201. The left-side fixing plate 202 is used to fix the ceramic tube 204 in the middle of the inner wall of the flaw detection inner cavity shell 201. The inner diameter of the right-side fixing plate 202 is consistent with the outer diameter of the ceramic tube 204, allowing the ceramic tube 204 to pass through the hole. The inner diameter of the through hole in the right-side fixing plate 203 is consistent with the ceramic tube 204. The ceramic tube 204 passes through the left-side fixing plate 202 and extends into the through hole in the right-side fixing plate 203. This multi-fixing structure effectively prevents the ceramic tube 204 from shifting during operation. To facilitate the smooth insertion of the tungsten wire, the end of the right-side fixing plate 203 of the probe, away from the inner housing 201 of the flaw detection cavity, is flared. Both ends of the inner housing 201 are connected to L-shaped air connectors 206, which are used to connect to external high-pressure air. When the tungsten wire passes through the probe, high-pressure air blows simultaneously from both sides, forming air walls at both ends of the ceramic tube 204. This blows off the graphite emulsion on the surface of the tungsten wire, preventing the graphite emulsion from clogging the ceramic tube 204 or damaging the probe. An aviation plug socket 207 is fixedly installed at one end, which is used to connect a data cable for signal transmission. The coil 205 is fixed to the outer wall of the ceramic tube 204 with sealant. The sealant can firmly bond the coil 205 to prevent displacement due to vibration, thereby ensuring the stability of the eddy current induction signal. Through the cooperation of the ceramic tube 204, the coil 205, the left fixing plate 202 of the probe, the right fixing plate 203 of the probe, and the L-shaped air pipe connector 206, efficient cleaning and accurate flaw detection of the tungsten wire are achieved.

[0026] As a preferred implementation method, to ensure stability during online flaw detection and adapt to the installation requirements of different equipment, please refer to... Figure 3 and Figure 6The fixing mechanism 3 adopts a multi-locking adjustment structure. The fixing mechanism 3 includes a positioning plate 301 fixedly connected to the rear side of the outer wall of the winding base 1. A movable plate 303 is slidably connected inside the positioning plate 301. The movable plate 303 can be adjusted relative to the positioning plate 301 to improve the ductility of the connection. To prevent the structure from loosening and falling off, positioning teeth 302 and pawls 305 are installed at the insertion points of the movable plate 303 and the positioning plate 301. Pawls 305 are fixedly connected to the left and right sides inside the positioning plate 301, and rotatably connected to the left and right sides of the outer wall of the movable plate 303. The positioning teeth 302 engage with each other, and the pawl 305 and the positioning teeth 302 mechanically engage to achieve initial anti-disengagement and positioning. In order to further improve the tightness of the fixation, screws 304 are connected to both sides of the moving plate 303. The outer wall of the screws 304 is slidably connected to the second positioning plate 307. The two ends of the screws 304 are threadedly connected to nuts 306. By rotating the nuts 306, the second positioning plate 307 is pressed against the screws under the action of the threads, thereby achieving the clamping and fixing of the wire drawing machine equipment installation part. The threaded rotation of the nuts 306 can improve the adaptability of the fixed connection of the rear winding base 1 and effectively prevent the structure from shaking during operation.

[0027] Working principle: In use, the winding base 1 is first fixedly connected to one side of the wire drawing machine for flaw detection. To ensure stability during online flaw detection, the fixing mechanism 3 is fixedly connected to the rear of the outer wall of the winding base 1. The positioning plate 301 is fixedly connected to the rear of the outer wall of the winding base 1. The moving plate 303 slides inside the positioning plate 301 to adjust the position. The pawl 305 engages with the positioning tooth 302 to prevent the structure from falling off. The nuts 306 connected by the threads at both ends of the screw 304 are rotated to fix and press against the positioning plate 307, thereby improving the adaptability of the fixed connection of the winding base 1 and preventing the structure from shaking during operation. During production, the tungsten wire is pulled by the winding wheel 5, which is rotatably connected to the top wall of the winding base 1. The tungsten wire is pulled from the winding wheel 5 to the flaw detection guide wheel 9. The flaw detection guide wheel 9 is rotatably connected to the top of the outer wall of the flaw detection positioning shaft 8. The flaw detection guide wheel 9 ensures that the tungsten wire runs stably in the center of the probe. Then the tungsten wire enters the interior of the probe mechanism 2. When the tungsten wire enters the probe mechanism 2, high-pressure air is introduced from the outside through the L-shaped air pipe joints 206 connected to both ends of the flaw detection inner cavity housing 201. The high-pressure air blows from both sides at the same time to form an air wall. The air wall blows out the graphite emulsion dust on the surface of the tungsten wire, preventing the graphite emulsion from clogging the ceramic tube 204 or causing damage to the probe. The flared shape of the right side fixing plate 203 of the probe is conducive to The tungsten wire is inserted, and after cleaning, it passes through the ceramic tube 204 and coil 205 fixed in the middle of the flaw detection inner cavity housing 201. The coil 205 generates eddy current signals, and the defect status of the tungsten wire is judged by the changes in the eddy current signals. The detection data is transmitted and processed through the aviation plug socket 207 fixedly installed at one end of the flaw detection inner cavity housing 201. When the tungsten wire leaves the probe mechanism 2, there is also a wind wall to prevent graphite milk powder or other dust from entering the ceramic tube 204. After the tungsten wire comes out from the left side, it passes through the meter wheel 4 connected to the top left side of the winding base 1 for length measurement, and finally reaches the take-up reel for wire winding. The online flaw detection method can reduce the rewinding loss of the wire and reduce labor costs.

Claims

1. A split-type online flaw detection eddy current probe, comprising: The winding base (1) and the probe mechanism (2) fixedly connected to the front side of the top of the winding base (1); Its features are, A fixing mechanism (3) is fixedly connected to the rear of the outer wall of the winding base (1). A meter wheel (4) is rotatably connected to the top left side of the winding base (1). A winding wheel (5) is rotatably connected to the top middle of the winding base (1). A flaw detection positioning shaft (8) is fixedly connected to the top right side of the winding base (1). A flaw detection guide wheel (9) is rotatably connected to the top of the outer wall of the flaw detection positioning shaft (8). The probe mechanism (2) includes a probe connecting plate (6) fixedly connected to the front top of the winding base (1). A probe mounting plate (7) is fixedly connected to the top right side of the probe connecting plate (6). A flaw detection inner cavity shell (201) is fixedly connected to the probe mounting plate (7). A ceramic tube (204) is fixedly connected to the middle of the inner wall of the flaw detection inner cavity shell (201). A coil (205) is fixedly connected to the outer wall of the ceramic tube (204).

2. The eddy current probe for split-type online flaw detection according to claim 1, characterized in that, The inner sides of the flaw detection inner cavity housing (201) are each fixedly connected to a probe left side fixing plate (202), and the outer sides of the flaw detection inner cavity housing (201) are each fixedly connected to a probe right side fixing plate (203). The ceramic tube (204) passes through the probe left side fixing plate (202) and extends into the inner through hole of the probe right side fixing plate (203).

3. The eddy current probe for split-type online flaw detection according to claim 2, characterized in that, The end of the right-side fixing plate (203) of the probe away from the flaw detection inner cavity housing (201) is shaped like a flared mouth, and the inner diameter of the inner through hole of the right-side fixing plate (203) of the probe is consistent with the outer diameter of the ceramic tube (204).

4. The eddy current probe for split-type online flaw detection according to claim 1, characterized in that, The two ends of the flaw detection inner cavity housing (201) are respectively connected to L-shaped air pipe connectors (206), and one end of the flaw detection inner cavity housing (201) is fixedly installed with an aviation plug socket (207).

5. The eddy current probe for split-type online flaw detection according to claim 1, characterized in that, The coil (205) is fixed to the outer wall of the ceramic tube (204) by sealant.

6. The eddy current probe for split-type online flaw detection according to claim 1, characterized in that, The fixing mechanism (3) includes a positioning plate (301) fixedly connected to the rear side of the outer wall of the winding base (1), and a movable plate (303) is slidably connected inside the positioning plate (301).

7. The eddy current probe for split-type online flaw detection according to claim 6, characterized in that, The moving plate (303) and the positioning plate (301) are provided with positioning teeth (302) and pawls (305). The pawls (305) are fixedly connected to the inside of the positioning plate (301) and rotatably connected to the outer wall of the moving plate (303). The pawls (305) and the positioning teeth (302) engage with each other.

8. The eddy current probe for split-type online flaw detection according to claim 6, characterized in that, Screws (304) are connected to both sides of the movable plate (303). A positioning plate (307) is slidably connected to the outer wall of the screw (304). Nuts (306) are threaded to both ends of the screw (304). The nuts (306) abut against the positioning plate (307).

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