Transformer winding damage detection and recovery automatic production line and method

Abstract

The invention discloses a transformer winding damage detection and recovery automatic production line and method, and relates to the technical field of transformer recovery, the transformer winding damage detection and recovery automatic production line comprises a machine vision detection device, an ultrasonic flaw detection device and a recovery module, the machine vision detection device comprises a first conveying roller way, and a camera is arranged above the first conveying roller way; the ultrasonic flaw detection device corresponds to one of the two-way conveying branches; the recovery module comprises a lifting mechanism, a crushing device, a separation device and a drying device which are arranged in sequence, the lifting mechanism is used for conveying the internal damaged winding recognized through ultrasonic flaw detection and the winding with the surface damaged through visual detection to the crushing device, and the separation device is used for separating the crushed copper wire and oil stain; and the drying device is used for drying the separated copper wires. The transformer winding copper wire recovery device has the functions of detection, recovery, damage, impurity removal and drying, can improve the recovery rate of transformer winding copper wires, has the function of detecting and identifying winding damage, and ensures effective recovery and utilization of failed transformer windings.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer recycling, and in particular to an automated production line and method for detecting and recycling transformer winding damage. Background Art

[0002] Recycling transformers can reduce procurement costs and improve economic benefits. Many parts of discarded transformers can continue to be used after repair and modification, which greatly reduces the production cost of new equipment. Metal materials such as copper and aluminum recovered from failed transformer parts can be recycled to save metal resources. Recycling transformer winding copper wire can save limited metal resources, reduce the demand for raw materials, and reduce resource consumption.

[0003] Some methods for recovering copper from transformers are disclosed in the prior art. For example, Chinese utility model patent CN205518626U discloses a special air separator for scrap wire particles, comprising a rectangular box, an air inlet is provided at the left or right end of the box, the air inlet is connected to the air outlet arranged in the box, the air inlet is connected to the air volume distributor through an air volume regulating valve, a feed distributor is provided on the top plate of the top of the box near the air outlet, a partition net is provided at the bottom of the box, and a multi-layer metal net is provided at the far end of the air inlet side of the box; the machine utilizes the large difference in density between the metal and the plastic outer skin in the scrap metal wire, and separates the metal particles from the plastic particles by adjusting the air volume and wind strength; wind power is used to separate the copper material to be recovered from impurities, and the instability of wind power during the separation process may cause impurities to contaminate the recovered copper material, resulting in the obtained copper material being not pure enough to meet the recovery standard.

[0004] Chinese invention patent CN103795009B discloses a method for separating the insulation layer of an electromagnetic wire, including a pay-off mechanism, a stripping mechanism, a take-up mechanism, a straightening device, a traction mechanism, and a dust collecting device; the separation method is: the stripping wheel is driven to rotate by the rotation of a motor, and the insulation layer on the surface of the electromagnetic wire is stripped from different directions of up, down, left, and right by the stripping wheel, and the dust collecting device is turned on at the same time to collect the dust generated during the stripping, and the stripped metal wire is collected by the traction mechanism and the take-up mechanism; this scheme uses a purely mechanical method to remove the insulation layer, and the efficiency is relatively low.

[0005] In summary, the existing copper wire recovery device has the following shortcomings:

[0006] (1) The copper raw materials recovered in the copper wire recovery device are mixed with impurities, and the copper materials are not pure enough to meet the recovery standards;

[0007] (2) The copper wire recycling device has low recycling efficiency and high losses, which does not meet the green economic goals of copper wire recycling. Summary of the invention

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an automated production line and method for detecting and recycling transformer winding damage, which has the functions of detection, recycling, destruction, impurity removal and drying, can improve the recovery rate of transformer winding copper wire, and has the function of detecting and identifying winding damage, thereby ensuring the effective recycling of failed transformer windings.

[0009] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0010] In a first aspect, an embodiment of the present invention provides an automated production line for detecting and recovering transformer winding damage, comprising:

[0011] The machine vision detection device comprises a first conveying roller that forms a bidirectional conveying branch, and a camera is arranged above the first conveying roller;

[0012] An ultrasonic flaw detection device, corresponding to one of the bidirectional transmission branches, is used to identify windings with intact surfaces through ultrasonic waves;

[0013] The recycling module includes a lifting mechanism, a crushing device, a separation device and a drying device which are arranged in sequence. The lifting mechanism is used to transport the internally damaged windings identified by ultrasonic flaw detection and the windings with surface damage detected by visual inspection to the crushing device. The separation device is used to separate the crushed copper wires from the oil stains. The drying device is used to dry the separated copper wires.

[0014] As a further implementation, the ultrasonic flaw detection device includes a turnover roller, an ultrasonic flaw detection channel and a second conveying roller arranged in sequence, and the second conveying roller has a bidirectional conveying branch, one of which is connected to the recovery module.

[0015] As a further implementation, the first conveying roller and the second conveying roller are connected to the input end of the lifting mechanism through a feeding mechanism.

[0016] As a further implementation, a lever is provided between the bidirectional conveying branches, and the lever is used to switch the conveying direction.

[0017] As a further implementation, the crushing device includes a feed hopper and a discharge hopper that are connected to each other, a crushing knife group is installed in the feed hopper, and the crushing knife group is connected to a driving mechanism.

[0018] As a further implementation, the separation device is a hot water separation device or an eddy current separator.

[0019] As a further implementation, the hot water separation device includes a water tank, a conveying chain plate is provided in the water tank, a heating copper tube is installed at the bottom of the water tank, and a first stirring mechanism is installed at the top;

[0020] One end of the conveying chain plate is provided with a material receiving plate, and the other end is provided with an inclined section.

[0021] As a further implementation, the drying device includes a drying box, and a second stirring mechanism is slidably connected to the top of the drying box.

[0022] As a further implementation, a ventilation net is provided in the drying box.

[0023] In a second aspect, an embodiment of the present invention further provides a transformer winding damage detection and recovery method, which adopts the automated production line, and comprises:

[0024] Load the transformer winding to the machine vision inspection device, which inspects the winding surface. The windings with failed parts are transported to the recovery module, and the windings with intact surfaces are transported to the ultrasonic flaw detection device.

[0025] The ultrasonic flaw detection device identifies the internal damage of the winding. If the internal part is intact, it will be directly transported to the material warehouse. If there is a failure phenomenon inside, it will be transported to the recycling module.

[0026] The failed windings are recycled after being crushed, separated, dried and refractory.

[0027] The beneficial effects of the present invention are as follows:

[0028] (1) The present invention adopts hot water separation method to remove impurities in the winding copper wire. No other pollutants and harmful substances will be generated during the separation process. In addition, hot water can remove oil on the surface of the copper wire, ensuring a safe working environment and improving the purity of the recovered copper material.

[0029] (2) The hot water separation method and eddy current separation method used in the present invention to recover impurities in the copper material will not further consume more energy, which is in line with the green and sustainable development purpose of the invention.

[0030] (3) The present invention includes a machine vision detection device, an ultrasonic flaw detection device, a crushing device, a separation device, a drying device, etc., which have the functions of detection, recovery, destruction, impurity removal, and drying, can improve the recovery rate of transformer winding copper wire, and has the function of detecting and identifying winding damage, thereby ensuring the full recovery and utilization of failed transformer windings.

[0031] (4) The machine vision inspection device of the present invention can detect the surface damage of the transformer winding. The windings with intact surfaces are further transported to the ultrasonic flaw detection device to detect internal damage. The damaged windings are collected to the lifting mechanism, crushed, separated, and dried before being recycled to ensure recycling efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0033] Figure 1 is a schematic diagram of the device structure according to one or more embodiments of the present invention;

[0034] Figure 2 is a schematic structural diagram of a machine vision inspection device according to one or more embodiments of the present invention;

[0035] Figure 3 is a schematic diagram of camera installation according to one or more embodiments of the present invention;

[0036] Figure 4 is a schematic diagram of the structure of a first conveyor roller according to one or more embodiments of the present invention;

[0037] Figure 5 is a schematic structural diagram of an ultrasonic flaw detection device according to one or more embodiments of the present invention;

[0038] Figure 6 is a schematic diagram of the structure of an ultrasonic flaw detection channel according to one or more embodiments of the present invention;

[0039] Figure 7 is a schematic structural diagram of a crushing device according to one or more embodiments of the present invention;

[0040] Figure 8 is a schematic diagram of the structure of a crushing knife group according to one or more embodiments of the present invention;

[0041] Fig. 9 The hot water separation device according to one or more embodiments of the present invention is schematically shown in FIG. Figure 1 ;

[0042] Fig.10 The hot water separation device according to one or more embodiments of the present invention is schematically shown in FIG. Figure 2 ;

[0043] Fig.11 is a schematic diagram of the structure of a heating copper tube according to one or more embodiments of the present invention;

[0044] Fig.12 is a schematic structural diagram of a first stirring mechanism according to one or more embodiments of the present invention;

[0045] Fig.13 is a schematic structural diagram of a drying device according to one or more embodiments of the present invention;

[0046] Fig.14is a schematic diagram of a ventilation network structure according to one or more embodiments of the present invention;

[0047] Fig.15 is a schematic structural diagram of an eddy current separator according to one or more embodiments of the present invention;

[0048] Fig.16 is a flow chart of the present invention according to one or more embodiments.

[0049] Among them, I, machine vision detection device, II, ultrasonic flaw detection device, III, crushing device, IV, hot water separation device, V, drying device, VI, feeding mechanism, VII, lifting mechanism;

[0050] I-1, first conveyor roller, I-2, first support frame, I-3, lighting lamp, I-4, lever, I-5, camera; II-1, second conveyor roller, II-2, turnover roller, II-3, ultrasonic flaw detector, II-4, ultrasonic flaw detection channel; III-1, discharge hopper, III-2, second support frame, III-3, electric box, III-4, feed hopper, III-5, crushing knife group, III-6, transmission mechanism, III-7, first drive motor; IV-1, conveyor chain plate, IV-2, second drive motor, IV-3, water tank, IV-4, stirring mechanism, IV-5, receiving plate, IV-6, first stirring motor, IV-7, heating copper tube; V-1, blower motor, V-2, drying box, V-3, ventilation net, V-4, second stirring shaft, V-5, second stirring motor, V-6, hot air blower;

[0051] IV-01-1, magnetic roller, IV-01-2, transmission roller, IV-01-3, vibration blanking plate. DETAILED DESCRIPTION

[0052] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0053] Embodiment 1:

[0054] This embodiment provides an automated production line for detecting and recovering transformer winding damage, such as Figure 1 As shown, it includes a machine vision detection device I, an ultrasonic flaw detection device II, a crushing device III, a separation device, a drying device V, etc. The separation device in this embodiment is a hot water separation device IV; the output end of the machine vision detection device I forms two branches, one branch corresponds to the ultrasonic flaw detection device II, and the other branch corresponds to the crushing device III. The hot water separation device IV and the drying device V are arranged in sequence on the rear side of the crushing device III.

[0055] Specifically, Figure 2-Figure 4 As shown, the machine vision inspection device I includes a first conveyor roller I-1, a first support frame I-2, a camera I-5, etc. The first conveyor roller I-1 has a certain length, and its output end forms two conveying branches. A lever I-4 is installed between the two conveying branches. Rotating the lever I-4 can block any conveying branch to transport to different processes. The first support frame I-2 is set at the input end of the first conveyor roller I-1, and the camera I-5 is installed on the first support frame I-2 and is located above the input end of the first conveyor roller I-1; the angle of the camera I-5 is adjustable. The shooting end of the camera I-5 is provided with a lighting lamp I-3 to facilitate obtaining a clear image; the lighting lamp I-3 can adjust the angle according to different shooting environments.

[0056] In order to avoid mutual interference between different processes, one of the conveying branches of the first conveying roller I-1 has an arc that bends outward, and the ultrasonic flaw detection device II corresponds to the arc-shaped conveying branch; the output end of the other straight conveying branch is provided with a first output roller, which is connected to the lifting mechanism VII through the first output roller. The winding with unknown damage is driven forward by the first conveying roller I-1, and after visual inspection, the angle of the lever I-4 is adjusted to go to different processes.

[0057] like Figure 5 As shown, the ultrasonic flaw detection device II includes a rotating roller II-2, an ultrasonic flaw detection channel II-4, an ultrasonic flaw detector II-3 and a second conveying roller II-1. The rotating roller II-2 is connected to the first conveying roller I-1. The rotating roller II-2 includes a first roller and a second roller perpendicular to each other, wherein the first roller is connected to the first conveying roller I-1, the second roller changes the conveying direction, and the second conveying roller II-1 is arranged at the output end of the second roller. The second conveying roller II-1 has the same structure as the first conveying roller I-1, and both use a material switching rod to achieve the switching of the conveying direction. The straight output branch of the second conveying roller II-1 is connected to the second output roller, and the conveying direction of the second output roller is perpendicular to the conveying direction of the first output roller; the arc output branch of the second conveying roller II-1 corresponds to the material warehouse. The first output roller and the second output roller constitute the feeding mechanism VI.

[0058] like Figure 6As shown, an ultrasonic flaw detection channel II-4 is provided above the second roller in the rotating roller II-2, and an ultrasonic flaw detector II-3 is provided on one side of the second roller; the winding with a good surface passes through the ultrasonic flaw detection channel II-4 driven by the rotating roller II-2, and the ultrasonic flaw detection channel II-4 converts electrical energy into mechanical energy through the probe (transducer) to generate ultrasonic waves. When ultrasonic waves propagate in the material, if they encounter defects (such as cracks, pores, etc.), they will be reflected on the defect interface, and the reflected ultrasonic waves will be received by the probe. By analyzing the time, amplitude and phase of the reflected wave, the existence and location of the defect can be determined. After amplification, filtering and other processing, the received ultrasonic signal forms an electrical signal that can be analyzed; the ultrasonic flaw detector II-3 converts these signals into images or waveforms and displays them on the screen. By analyzing these images or waveforms, the location, size and shape of the defect can be determined. The winding that has been inspected is sent to the next process or material warehouse by changing the angle of the lever I-4.

[0059] A lifting mechanism VII is provided between the feeding mechanism VI and the crushing device III, and the lifting mechanism VII delivers the windings on the first output roller table and / or the second output roller table to the crushing device III for crushing. The lifting mechanism VII is implemented by an existing structure and will not be described in detail here.

[0060] like Figure 7 As shown, the crushing device III includes a second support frame III-2, a feed hopper III-4, a discharge hopper III-1, a crushing knife group III-5 and a driving mechanism, the feed hopper III-4 is installed on the upper side of the second support frame III-2, the discharge hopper III-1 is connected to the feed hopper III-4, and is installed on the lower side of the second support frame III-2; the crushing knife group III-5 is installed in the feed hopper III-4, and the crushing knife group III-5 is connected to the driving mechanism, and the driving mechanism is located outside the feed hopper III-4; the driving mechanism is powered by the electric box III-3, driving the crushing knife group III-5 to rotate to achieve the crushing of the winding. In this embodiment, the outlet of the discharge hopper III-1 is set toward the side of the second support frame III-2 to achieve lateral discharge, which is convenient for input to the next process.

[0061] The driving mechanism includes a first driving motor III-7 and a transmission mechanism III-6. The first driving motor III-7 is connected to the crushing knife group III-5 through the transmission mechanism III-6. The transmission mechanism III-6 can be a gear transmission mechanism, a belt transmission mechanism, a chain transmission mechanism, etc., which is selected according to the actual crushing requirements. Figure 8 As shown, the crushing knife group III-5 adopts a double-axis structure, with multiple crushing knives installed on each axis, and the crushing of the winding is achieved by the crushing knives of the two axes rotating in opposite directions.

[0062] The crushing knife has multiple blades evenly distributed around the blade axis. The cutting surface of the blade is serrated, which is suitable for cutting thicker copper wire windings. The blade material is made of high-strength, wear-resistant hard alloy (such as tungsten steel) to be suitable for cutting windings. The blade width is selected within the range of 1 to 5 mm according to the wire diameter and number of layers of the winding.

[0063] For the windings that have failed after detection, they are lifted to the feed hopper III-4 of the crushing device III through the lifting mechanism VII, and the windings fall into the crushing knife group III-5 along the feed hopper III-4. The windings are destroyed under the power of the driving mechanism, and the winding copper wires are cut into a certain length. The cut copper wires fall from the discharge hopper III-1 to the next process.

[0064] like Fig. 9 and Fig.10 As shown, the hot water separation device IV includes a water tank IV-3, a conveying chain plate IV-1, a first stirring mechanism IV-4, a heating copper tube IV-7, etc. The conveying chain plate IV-1 is arranged in the water tank IV-3, and is driven by the second driving motor IV-2 to convey the cut copper wire; the conveying chain plate IV-1 has an inclined section and a horizontal section, and the inclined section is connected with the drying device V; the inclined section is inclined upward from the inside of the water tank IV-3 to the side where the drying device V is located. A receiving plate IV-5 is installed at the end of the water tank IV-3 opposite to the inclined section of the conveying chain plate IV-1, and the receiving plate IV-5 corresponds to the discharge hopper III-1 of the crushing device III, which is used to receive the cut winding copper wire. The water tank IV-3 is filled with water, and the water exceeds a certain height of the conveying chain plate IV-1; a heating copper tube IV-7 is installed at the bottom of the water tank IV-3, and the water in the water tank IV-3 is heated by the heating copper tube IV-7.

[0065] like Fig.11 As shown, the heating copper tube IV-7 includes a plurality of mutually parallel transverse tubes, and the two ends of the transverse tubes are connected by longitudinal tubes; uniform heating is achieved by the cooperation of the transverse tubes and the longitudinal tubes. Fig.12 As shown, the first stirring mechanism IV-4 includes a first stirring shaft, a first stirring motor IV-6 connected to the first stirring shaft, and a plurality of stirring blades are spirally distributed along the first stirring shaft. The first stirring shaft spans the upper side of the water tank IV-3, and the first stirring motor IV-6 stirs the copper wire in the water.

[0066] The difference between the mass of copper and the mass of insulating material is large. This mass difference leads to a large difference in movement between the two components during mixing, making separation easier. The stirring blade is the part that directly contacts the material, and its shape and arrangement have an important influence on the stirring effect. In this embodiment, the stirring blade adopts a fan-shaped structure, which can increase the contact area, thereby increasing the movement difference between the insulating material and the copper material; the stirring blade angle (that is, the angle between the stirring blade and the stirring shaft) has an important influence on the axial and circumferential movement speed of the material. When the stirring blade angle is 0°, the material only moves in a circular motion, and the stirring effect is poor. When the angle is close to 90°, the stirring effect of the stirring blade on the material is weakened; therefore, the stirring blade angle is set to an acute angle, for example, a 45° angle design is adopted. The height of the first stirring shaft from the bottom surface of the water tank IV-3 is 50 mm, and the stirring effect is further optimized by adjusting the staggered arrangement and asymmetric distribution of the blades.

[0067] The cut winding copper wire enters the water tank IV-3, and the "hot water separation process" is used to separate the insulating material and copper according to the difference in thermal expansion coefficient and mass difference. The cut copper wire is stirred by the first stirring mechanism IV-4 under the power of the first stirring motor IV-6 to achieve complete separation. This process is suitable for recycling various types of winding waste, including oil-containing winding copper wire, which is usually more difficult to recycle. The difference in quality between copper and insulating material is large. This difference in quality leads to a large difference in movement between the two components during the mixing process, so separation becomes easier. The separated copper wire sinks into the water, and the second drive motor IV-2 provides power, and it enters the next process driven by the conveyor chain plate IV-1.

[0068] This embodiment adopts hot water separation method to remove impurities in winding copper wire. No other pollutants and harmful substances will be generated during the separation process. Hot water can remove oil on the surface of copper wire, ensuring a safe working environment and improving the purity of recycled copper materials. It also consumes less energy and does not cause waste of resources.

[0069] like Fig.13 As shown, the drying device V includes a drying box V-2, and a ventilation net V-3 is installed at the bottom of the drying box V-2. The ventilation net V-3 is as follows Fig.14The mesh structure shown. A blower motor V-1 and a hot air blower V-6 are installed at one end of the drying box V-2; a second stirring mechanism is installed on the top of the drying box V-2, and the second stirring mechanism includes a second stirring motor V-5 and a second stirring shaft V-4. The second stirring motor V-5 is connected to the second stirring shaft V-4, and a plurality of stirring rods are distributed on the second stirring shaft V-4. The second stirring shaft V-4 spans the upper side of the drying box V-2, and the two ends of the second stirring shaft V-4 are respectively connected to the drying box V-2 through a slider and a slide rail structure, so that the second stirring shaft V-4 can move along the length direction of the drying box V-2; stirring during the movement is conducive to uniform drying and improved drying efficiency.

[0070] The copper wire that has been de-impurified falls into the drying box V-2, and the second stirring motor V-5 provides power for the second stirring shaft V-4 to break up the copper wire so that the broken copper wire is evenly scattered on the ventilation net V-3 to prevent entanglement and agglomeration from affecting the drying effect. The hot air is sent into the hot air duct through the outlet flange of the blower motor V-1 and enters the bottom of the drying box V-2, and is continuously sprayed and transported through the micropores on the surface of the ventilation net V-3, so that the airflow boils evenly and achieves a uniform drying effect.

[0071] This embodiment has the functions of detection, recovery, destruction, impurity removal and drying, which can improve the recovery rate of transformer winding copper wire, and has the function of detecting and identifying winding damage to ensure full recovery and utilization of failed transformer windings.

[0072] Embodiment 2:

[0073] This embodiment provides an automated production line for detecting and recovering transformer winding damage, which differs from Embodiment 1 in that an eddy current separator is arranged between the lifting mechanism VII and the drying device V, that is, the separation device is a turbine separator; Fig.15 As shown, the eddy current separator includes a frame and a belt installed on the frame, a transmission roller IV-01-2 is installed at one end of the belt, a magnetic roller IV-01-1 is installed at the other end, and a vibrating drop tray IV-01-3 is provided above the end of the belt where the transmission roller IV-01-2 is installed.

[0074] After being crushed by the crushing device III, the damaged copper wire winding is cut into a mixture of copper material and insulating layer and falls onto the vibrating blanking plate IV-01-3. Under the rotation of the transmission roller IV-01-2, the belt drives the copper material forward. Copper is a conductor material. When copper passes through the alternating magnetic field generated by the rotation of the magnetic roller IV-01-1, eddy currents will be generated. The eddy currents will form a closed loop in the conductor material and generate a reverse electromagnetic field. Different materials have different electrical conductivities. Therefore, under the same magnetic field, different materials will generate eddy currents of different intensities. The eddy current itself will generate an alternating magnetic field in the opposite direction to the external magnetic field. According to the principle of Lorentz force (the force of the magnetic field on the current), the metal will be subject to repulsive force, thereby achieving separation from other non-conductors or non-metallic substances.

[0075] Embodiment 3:

[0076] This embodiment provides a transformer winding damage detection and recovery method, using the automated production line described in Embodiment 1 or Embodiment 2, such as Fig.16 As shown, the following steps are included:

[0077] Step 1: Obtain copper wire windings from a transformer that has not reached its service life but has failed, and load them onto the first conveyor roller I-1 of the machine vision inspection device I.

[0078] Step 2: The machine vision inspection device I detects whether there is any damage, copper wire burnout, breakage or other failure phenomenon on the surface of the copper wire winding. If there is any failure phenomenon, it is transferred to the recovery module (lifting mechanism VII, crushing mechanism, etc.) for recovery. If the surface of the copper wire winding is intact, it is transferred to the ultrasonic flaw detection device II.

[0079] Step 3: The ultrasonic flaw detection device II receives the copper wire winding with intact surface and performs ultrasonic detection on its interior to detect whether there is any degree of damage inside. If the interior is intact, it is directly transported to the material warehouse. If there is failure inside, it is transported to the recycling module for recycling.

[0080] Step 4: When the failed copper wire winding enters the recycling module, it first enters the crushing device III to be crushed into copper materials of different lengths, and then enters the hot water separation device IV or eddy current separator to separate the insulation layer and oil stains on the surface of the copper wire. Finally, the clean copper material is dried to complete the recycling.

[0081] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A transformer winding damage detection and recovery automated production line, characterized in that: include: The machine vision detection device comprises a first conveying roller that forms a bidirectional conveying branch, and a camera is arranged above the first conveying roller; An ultrasonic flaw detection device, corresponding to one of the bidirectional transmission branches, is used to identify windings with intact surfaces through ultrasonic waves; The recycling module includes a lifting mechanism, a crushing device, a separation device and a drying device which are arranged in sequence. The lifting mechanism is used to transport the internally damaged windings identified by ultrasonic flaw detection and the windings with surface damage detected by visual inspection to the crushing device. The separation device is used to separate the crushed copper wires from the oil stains. The drying device is used to dry the separated copper wires.

2. The transformer winding damage detection and recovery automated production line according to claim 1 is characterized in that: The ultrasonic flaw detection device comprises a circulating roller, an ultrasonic flaw detection channel and a second conveying roller which are arranged in sequence. The second conveying roller has a bidirectional conveying branch, one of which is connected to the recovery module.

3. The transformer winding damage detection and recovery automated production line according to claim 2 is characterized in that: The first conveying roller and the second conveying roller are connected with the input end of the lifting mechanism through the feeding mechanism.

4. The transformer winding damage detection and recovery automated production line according to claim 1 or 2, characterized in that: A shifting rod is arranged between the bidirectional conveying branches, and the shifting rod is used to switch the conveying direction.

5. The transformer winding damage detection and recovery automated production line according to claim 1, characterized in that: The crushing device comprises a feed hopper and a discharge hopper which are connected to each other. A crushing knife group is installed in the feed hopper, and the crushing knife group is connected to a driving mechanism.

6. The transformer winding damage detection and recovery automated production line according to claim 1, characterized in that: The separation device is a hot water separation device or an eddy current separator.

7. The transformer winding damage detection and recovery automated production line according to claim 6, characterized in that: The hot water separation device comprises a water tank, a conveying chain plate is arranged in the water tank, a heating copper pipe is installed at the bottom of the water tank, and a first stirring mechanism is installed at the top; One end of the conveying chain plate is provided with a material receiving plate, and the other end is provided with an inclined section.

8. The transformer winding damage detection and recovery automated production line according to claim 1, characterized in that: The drying device comprises a drying box, and a second stirring mechanism is slidably connected to the top of the drying box.

9. The transformer winding damage detection and recovery automated production line according to claim 8, characterized in that: A ventilation net is arranged in the drying box.

10. A transformer winding damage detection and recovery method, characterized in that: The automated production line according to any one of claims 1 to 9 comprises: Load the transformer winding to the machine vision inspection device, which inspects the winding surface. The windings with failed parts are transported to the recovery module, and the windings with intact surfaces are transported to the ultrasonic flaw detection device. The ultrasonic flaw detection device identifies the internal damage of the winding. If the internal part is intact, it will be directly transported to the material warehouse. If there is a failure phenomenon inside, it will be transported to the recycling module. The failed windings are recycled after being crushed, separated, dried and refractory.

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