A distribution transformer intelligent wiring device based on three-dimensional image recognition

Abstract

The present invention relates to the field of industrial automatic detection technology, and in particular to a distribution transformer intelligent wiring device based on three-dimensional image recognition, including a regulating transformer rotating mechanism arranged at the bottom of a profile frame, a power distribution primary wiring mechanism and a power distribution secondary wiring mechanism arranged at the top of the profile frame, and an industrial camera and a driving mechanism arranged at the top of the profile frame. The regulating transformer rotating mechanism is used to adjust the position of the transformer to be detected, and the industrial camera is used to scan and locate the high and low voltage bushings of the transformer, analyze and process the collected positioning information, and drive the power distribution primary wiring mechanism and the power distribution secondary wiring mechanism to work through the driving mechanism. By adjusting the position of the regulating transformer rotating mechanism, accurately positioning the industrial camera, and positioning and crimping the power distribution primary wiring mechanism and the power distribution secondary wiring mechanism, automatic wiring is achieved, effectively avoiding the risks and costs of manual wiring, and promoting intelligent detection experiments in the field of transformers.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automatic detection, and in particular to an intelligent wiring device for distribution transformers based on three-dimensional image recognition. Background Art

[0002] At present, the detection methods in various places still mainly rely on manpower. In the context of the era of intelligent manufacturing, intelligent detection has also become a focus, and higher requirements have been put forward for transformer detection. Considering many factors such as labor costs, safety hazards, detection efficiency, and automated transformation, it is urgent to transform the traditional distribution transformer wiring method with manual detection into an automated modern intelligent distribution transformer wiring method.

[0003] Patent application No. 201420537084.8 discloses a modular configuration of 3 / 2 wiring of smart substation, which simplifies the 3 / 2 wiring of smart substation, facilitates the manufacturer's production, assembly and debugging, as well as replacement and operation and maintenance after use. It can be applied to distribution transformer intelligent wiring devices, but there is still a blank for automatic wiring devices of secondary side wiring devices. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a distribution transformer intelligent wiring device based on three-dimensional image recognition, which mainly performs automated design on the wiring of distribution transformers, and aims to achieve intelligent wiring of distribution transformers through a visual recognition system and an automatic wiring system.

[0005] In order to achieve the above object, the technical solution applied by the present invention is as follows:

[0006] A distribution transformer intelligent wiring device based on three-dimensional image recognition comprises a regulating transformer rotating mechanism arranged at the bottom of a profile frame, a power distribution primary side wiring mechanism and a power distribution secondary side wiring mechanism arranged at the upper part of the profile frame, and an industrial camera and a driving mechanism arranged at the top of the profile frame. The regulating transformer rotating mechanism is used to adjust the position of a transformer to be detected, and the industrial camera is used to scan and locate the high and low voltage bushings of the transformer, analyze and process the collected positioning information, and drive the power distribution primary side wiring mechanism and the power distribution secondary side wiring mechanism to work through the driving mechanism.

[0007] Furthermore, the regulating transformer rotating mechanism includes a rotating motor, a rotating disk and a transformer turnover bracket. The transformer turnover bracket is arranged on the rotating disk, and the rotating disk is driven to rotate by the rotating motor.

[0008] Furthermore, the primary-side wiring mechanism of the power distribution includes an insulating pressure plate support and a wire crimping connector. The wire crimping connector is connected to a driving mechanism through the insulating pressure plate support. The driving mechanism drives the wire crimping connector to contact and position the transformer.

[0009] Furthermore, the crimping connector adopts a mechanical claw structure.

[0010] Furthermore, the power distribution secondary side wiring mechanism includes a clamp, a cylinder, a secondary side buffer plate, a slider, a slide rail and an insulating partition. The insulating partition is connected to the driving mechanism, the slide rail is arranged on the insulating partition, the slider can slide in the slide rail, the cylinder and the secondary side buffer plate are both arranged on the slider, and the cylinder controls the extension and retraction of the clamp.

[0011] Furthermore, the driving mechanism includes a rack, a gear and a driving motor, the rack and the gear are meshingly connected, the driving motor drives the gear to rotate, and the rack is connected to the insulating pressure plate support of the primary side wiring mechanism of the power distribution and the insulating partition of the secondary side wiring mechanism of the power distribution.

[0012] Furthermore, the driving motor is correspondingly provided with a proximity switch and a travel switch.

[0013] Beneficial effects of the present invention:

[0014] 1) By adjusting the position of the transformer rotating mechanism, accurately positioning the industrial camera, and positioning and crimping the primary and secondary wiring mechanisms of the power distribution, automatic wiring can be achieved, effectively avoiding the risks and costs of manual wiring, and promoting intelligent detection and testing in the transformer field;

[0015] 2) Compact structure, stable operation, easy installation, modular structure, integrated functions, easy processing, low cost, providing a carrier for the automation and intelligent development in the field of distribution transformer intelligent wiring, and providing a guarantee for the realization of integrated intelligent detection system in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereogram of the overall structure of the present invention;

[0017] Figure 2 It is the front view of the overall structure of the present invention;

[0018] Figure 3 yes Figure 2 A magnified image of position A in the middle;

[0019] Figure 4 yes Figure 2 Enlarged view of position B in the middle;

[0020] Figure 5 It is a side view of the overall structure of the present invention;

[0021] Figure 6 yes Figure 5 Sectional view at CC position.

[0022] 1. Rotating motor; 2. Rotating disk; 3. Transformer turnover bracket; 4. Profile frame; 5. Cylinder; 6. Secondary side buffer plate; 7. Slider; 8. Slide rail; 9. Insulating partition; 10. Proximity switch; 11. Travel switch; 12. Rack; 13. Industrial camera; 14. Gear; 15. Driving motor; 16. Insulating pressure plate support; 17. Wire crimping connector. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1 to 6 As shown, the intelligent wiring device for distribution transformer based on three-dimensional image recognition described in the present invention includes a regulating transformer rotating mechanism arranged at the bottom of the profile frame 4, a power distribution primary wiring mechanism and a power distribution secondary wiring mechanism arranged at the upper part of the profile frame 4, and an industrial camera 13 and a driving mechanism arranged at the top of the profile frame 4. The regulating transformer rotating mechanism is used to adjust the position of the transformer to be detected, and the industrial camera 13 is used to scan and locate the high and low voltage bushings of the transformer, analyze and process the collected positioning information, and drive the power distribution primary wiring mechanism and the power distribution secondary wiring mechanism to work through the driving mechanism. With such a structural setting, its working principle is to place the transformer to be detected on the regulating transformer rotating mechanism, adjust the position of the transformer to be detected by adjusting the transformer rotating mechanism, and then scan and locate the high and low voltage bushings of the transformer by the industrial camera 13, analyze and process the collected positioning information, and finally drive the power distribution primary wiring mechanism and the power distribution secondary wiring mechanism to work through the driving mechanism, thereby completing the automated wiring work of the test.

[0025] More specifically, the transformer regulating rotating mechanism comprises a rotating motor 1, a rotating disk 2 and a transformer turnover bracket 3, wherein the transformer turnover bracket 3 is arranged on the rotating disk 2, and the rotating disk 2 is driven to rotate by the rotating motor 1. With such a structural arrangement, its working principle is that the transformer to be detected is placed on the transformer turnover bracket 3, and the rotating disk 2 is driven to rotate by the rotating motor 1 to drive the transformer to be detected on the transformer turnover bracket 3 to rotate together, thereby achieving the effect of adjusting the position of the transformer to be detected.

[0026] More specifically, the primary side wiring mechanism of the power distribution includes an insulating pressure plate support 16 and a wire crimping connector 17. The wire crimping connector 17 is connected to a driving mechanism through the insulating pressure plate support 16, and the driving mechanism drives the wire crimping connector 17 to contact and position with the transformer. With such a structural setting, its working principle is that the driving mechanism drives the insulating pressure plate support 16 to drive the wire crimping connector 17 to dock with the high-voltage bushing of the transformer to be tested.

[0027] In practical applications, the specific spatial position of the transformer high-voltage bushing is located by the industrial camera 13, and the spatial three-dimensional coordinates of the crimping connector 17 are controlled by the driving mechanism, so that it is finally in full contact with the high-voltage bushing of the transformer to be tested.

[0028] In practical applications, the movement mode of the crimping connector 17 is to adjust the horizontal position first, and then crimp from top to bottom.

[0029] More specifically, the crimping connector 17 adopts a mechanical claw structure. With such a structural setting, the contact and positioning of the transformer to be tested and the wiring terminal can be achieved efficiently and conveniently.

[0030] In practical applications, a portion of epoxy resin pads are installed on both sides of the wire crimping connector 17 to increase the creepage distance.

[0031] More specifically, the power distribution secondary wiring mechanism includes a clamp, a cylinder 5, a secondary side buffer plate 6, a slider 7, a slide rail 8 and an insulating partition 9. The insulating partition 9 is connected to the driving mechanism, the slide rail 8 is arranged on the insulating partition 9, the slider 7 can slide in the slide rail 8, the cylinder 5 and the secondary side buffer plate 6 are both arranged on the slider 7, and the cylinder 5 is arranged on the inner side of the clamp to control the extension and retraction of the clamp. With such a structural setting, its working principle is to drive the insulating partition 9 to move the slide rail 8 up and down through the driving mechanism, and then drive the extension and retraction of the clamp through the cylinder 5, so that the clamp drives the pressure pin mounting seat to dock with the low-voltage bushing of the transformer to be tested, and realizes crimping.

[0032] That is to say, double positioning is required for the secondary side terminal. The first time, the industrial camera 13 cooperates with the driving mechanism to perform rough positioning, and the second time, the cylinder 5 adjusts the pressure needle mounting seat to perform the final precise wiring positioning.

[0033] In practical applications, in order to ensure that the secondary side connection can be firmly in contact, a cylinder 5 is installed inside the clamping jaws to achieve the clamping jaws opening and closing adjustment within a certain stroke range, which can meet the needs of different types of transformers and adjust the contact range of the connection.

[0034] In practical applications, the role of the insulating partition 9 is to ensure the safety of the equipment and surrounding construction workers.

[0035] In practical applications, the slide block 7 and the slide rail 8 are used to adjust the guidance of the clamping jaws and the cylinder 5 .

[0036] More specifically, the drive mechanism includes a rack 12, a gear 14 and a drive motor 15, the rack 12 is meshed with the gear 14, the drive motor 15 drives the gear 14 to rotate, and the rack 12 is connected to the insulating pressure plate support 16 of the primary wiring mechanism of the power distribution and the insulating partition 9 of the secondary wiring mechanism of the power distribution. In practical applications, the drive mechanism of the present invention is composed of three racks 12, gears 14 and drive motors 15 in perpendicular directions to each other, and is used to control the travel of the primary wiring mechanism of the power distribution and the secondary wiring mechanism of the power distribution in the X, Y and Z axis directions.

[0037] In practical applications, the position adjustment of the wire crimping connector 17 is driven by the rack 12 and the gear 14 in perpendicular directions to each other, wherein the gear 14 is driven by the driving motor 15 to achieve the position adjustment of the wire crimping connector 17 .

[0038] In practical applications, the gear 14 is coaxial with the output shaft of the drive motor 15. To enhance stability during movement, the output end of one drive motor 15 is generally connected to two gear rack systems via a rigid shaft.

[0039] More specifically, the drive motor 15 is provided with a proximity switch 10 and a travel switch 11. In practical applications, the proximity switch 10 and the travel switch 11 are used to limit the displacement of the primary side wiring mechanism and the secondary side wiring mechanism of the power distribution in the Z-axis direction, so as to ensure that the primary side wiring mechanism and the secondary side wiring mechanism of the power distribution do not collide with each other and interfere with each other, thereby avoiding damage to the main body structure.

[0040] It should be noted that, because the voltage levels of the primary-side wiring mechanism and the secondary-side wiring mechanism of the distribution are quite different, the theoretical maximum voltage of the primary-side wiring mechanism of the distribution is 20kV. In order to ensure the insulation distance during the test, the secondary-side wiring mechanism of the distribution all leads out from the direction away from the primary-side wiring mechanism of the distribution, and the other side is insulated with an insulating partition 9. Therefore, the insulating pressure plate support 16 used by the primary-side wiring mechanism of the distribution and the insulating partition 9 used by the secondary-side wiring mechanism of the distribution are slightly different in size, and the connection point of the secondary-side wiring mechanism of the distribution is required to have an adjustable margin within a certain range to meet the test requirements of different transformers.

[0041] In actual applications, there are four terminals on the secondary side of a 10Kv distribution transformer, namely a, b, c and N. According to the actual transformer model measurement on site, the distance between the three phases a, b and c in the 10Kv transformer with a capacity of 200KvA-630KvA does not change much, while the distance between the three phases a varies greatly with the same N. Taking the above factors into consideration and in order to ensure the wiring efficiency, the wiring mechanisms of the three phases a, b and c are connected in parallel and move synchronously, and the wiring mechanism of the N phase is controlled by a separate motor to ensure the wiring function.

[0042] In practical applications, considering that the flatness of the copper terminal end surfaces processed by the manufacturer is uneven, if the flatness is low, the contact area will be insufficient, affecting the reliability of the test data. To solve the above problems, the secondary clamping mechanism uses nine springs for multi-point crimping. On the one hand, it reduces the impact of the flatness of the terminal surface to ensure the contact area, and on the other hand, it protects the wiring fixture to avoid direct rigid contact. The end of the crimping terminal block composed of nine crimping short columns is transferred to the copper adapter plate through a high-current wire, and finally led out through two high-current wires.

[0043] In practical applications, when the capacity of the transformer under test is 630KvA 10Kv, theoretically the secondary voltage will be the highest during the induction withstand voltage test. According to calculations, the secondary voltage is up to about 800v, ​​which is a relatively small voltage. Considering the installation space of the cylinder air pipe, etc., the distance between the live parts of the a, b, and c three-phase clamps is set to 45mm.

[0044] In actual applications, due to the different processing techniques of distribution transformer terminals from different manufacturers, the processing accuracy of transformer terminals from different manufacturers is different. Considering the verticality of the secondary side wiring copper plate and the parallelism of the copper plate wiring end face with the reference end face, in order to ensure the wiring quality, wiring success rate and reliability of subsequent tests, the secondary side wiring mechanism needs to have a certain flexibility, that is, it can automatically make adjustments according to the situation of the wiring terminal within a certain range.

[0045] The workflow of the present invention is:

[0046] Before the experiment, first ensure the stability and firmness of the profile frame 4, adjust the primary side wiring mechanism and the secondary side wiring mechanism of the power distribution to a certain height of safe distance, then use a forklift to place the test sample transformer on the transformer turnover bracket 3, and finally use the rotating motor 1 to drive the rotating disk 2 to properly adjust the position of the transformer, so that the arrangement of the transformer insulator terminal is parallel to the primary side wiring mechanism and the secondary side wiring mechanism of the power distribution;

[0047] During the experiment, the transformer must be grounded. First, the industrial camera 13 is used to identify and locate the transformer terminals. Then, the drive motor 15 drives the gear 12 to move along the rack 14 accordingly, so that the primary side wiring mechanism and the secondary side wiring mechanism of the power distribution are respectively in contact with the high and low voltage insulation terminals of the transformer. Finally, the high voltage power supply is connected to carry out the voltage test.

[0048] After the experiment, turn off the power supply, reset the primary and secondary wiring mechanisms of the power distribution to their initial working state, use a forklift to move the test samples out of the test area, and classify them differently according to the success or failure of the test.

[0049] The description and application of the present invention here are illustrative, and are not intended to limit the scope of the present invention to the above-described embodiments. The deformation and changes of the embodiments disclosed here are possible, and the replacement and equivalent various parts of the present embodiment are well known. It should be clear to those skilled in the art that the present invention can be realized in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential characteristics of the present invention. Other deformation and changes can be made to the embodiments disclosed here without departing from the scope and spirit of the present invention.

[0050] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, should be reasonably included in the patent protection scope of the present invention.

Claims

1. A distribution transformer intelligent wiring device based on three-dimensional image recognition, characterized in that: It comprises a regulating transformer rotating mechanism arranged at the bottom of the profile frame (4), a power distribution primary side wiring mechanism and a power distribution secondary side wiring mechanism arranged at the top of the profile frame (4), and an industrial camera (13) and a driving mechanism arranged at the top of the profile frame (4), wherein the regulating transformer rotating mechanism is used to adjust the position of the transformer to be detected, and the industrial camera (13) is used to scan and locate the high and low voltage bushings of the transformer, analyze and process the collected positioning information, and drive the power distribution primary side wiring mechanism and the power distribution secondary side wiring mechanism to work through the driving mechanism; The regulating transformer rotating mechanism comprises a rotating motor (1), a rotating disk (2) and a transformer turnover bracket (3); the transformer turnover bracket (3) is arranged on the rotating disk (2); and the rotating disk (2) is driven to rotate by the rotating motor (1); The power distribution primary side wiring mechanism comprises an insulating pressure plate support (16) and a wire pressing joint (17), wherein the wire pressing joint (17) is connected to a driving mechanism via the insulating pressure plate support (16), and the driving mechanism drives the wire pressing joint (17) to contact and position with the transformer; The power distribution secondary side wiring mechanism comprises a clamping jaw, a cylinder (5), a secondary side buffer plate (6), a slider (7), a slide rail (8) and an insulating partition (9), wherein the insulating partition (9) is connected to a driving mechanism, the slide rail (8) is arranged on the insulating partition (9), the slider (7) can slide in the slide rail (8), the cylinder (5) and the secondary side buffer plate (6) are both arranged on the slider (7), and the cylinder (5) controls the extension and retraction of the clamping jaw; The drive mechanism comprises a rack (12), a gear (14) and a drive motor (15); the rack (12) and the gear (14) are meshingly connected; the drive motor (15) drives the gear (14) to rotate; and the rack (12) is connected to an insulating pressure plate support (16) of a power distribution primary side wiring mechanism and an insulating partition (9) of a power distribution secondary side wiring mechanism.

2. According to claim 1, a distribution transformer intelligent wiring device based on three-dimensional image recognition is characterized in that: The wire crimping connector (17) adopts a mechanical claw structure.

3. The intelligent wiring device for distribution transformer based on three-dimensional image recognition according to claim 1 is characterized in that: The driving motor (15) is provided with a proximity switch (10) and a travel switch (11) correspondingly.

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