An intelligent high-frequency transformer withstand voltage test equipment

Abstract

The present invention relates to an intelligent high-frequency transformer withstand voltage test device applied to the field of high-frequency transformer testing. When a tester is used to perform intelligent correction on a misplaced test body, an alignment detection module is used to detect the alignment status of the test body and a detection hole on the surface of the tester, and targeted correction processing is performed according to the detected alignment status. The correction alignment is achieved by the cooperation of an electromagnetic strip and an electromagnetic ring, a follower gear and a support plate. After alignment, the electromagnetic strip attracts two magnetic racks, the follower gear expands outward, and the test body falls to the surface of the tester for testing; after the test, it is transported to a good product area or a waste area. In addition, by the cooperation of a shaft and a micro electric extension rod, the test body can enter the good product area or the waste area in a vertical landing manner when leaving the surface of the tester, thereby reducing the cross-sectional occupancy of the good product area or the waste area, and then at least one more detection line is added in a detection table with limited size to improve the detection efficiency.

Description

Technical Field

[0001] The invention relates to a high-frequency transformer withstand voltage test device, in particular to an intelligent high-frequency transformer withstand voltage test device applied to the high-frequency transformer test field. Background Art

[0002] The withstand voltage test is one of the main methods for checking the overvoltage tolerance of electrical equipment, electrical equipment, electrical devices, circuits and electrical safety equipment. There are two types of withstand voltage test: the frequency withstand voltage test and the DC withstand voltage test. The test voltage of the withstand voltage test is one to several times the rated voltage of the tested equipment, which is above 1000V. The pressurization time is: 1 minute for equipment with porcelain and liquid as the main insulation, 5 minutes for equipment with organic solid as the main insulation, 3 minutes for transformers, and 10 minutes for oil transmission cables. The DC withstand voltage test can draw a leakage current-voltage characteristic curve through the leakage current values ​​at different test voltages. After the withstand voltage test, local defects, moisture and aging of the insulation of electrical equipment can be found.

[0003] The specification of Chinese invention patent CN202010130303.0 discloses a transformer withstand voltage test device and withstand voltage test method. Multiple transformers can be placed on multiple conveying units, and the control unit controls the conveying unit to run to the test station of the test unit for withstand voltage test, and the control unit can monitor the test time of the transformer on each conveying unit; when the above test time reaches the preset value, the conveying unit is controlled to output the transformer, and multiple transformers can be subjected to withstand voltage test at one time, which improves the test efficiency.

[0004] Existing withstand voltage test equipment is usually designed for multiple test stations when performing high-efficiency withstand voltage tests. When the transformer is subjected to withstand voltage tests, a robotic arm is often used to place the transformer on the test station. However, due to the small size of the transformer, a large number of pins need to be aligned, and the alignment operation is more complicated. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a test device with high efficiency detection that can be intelligently aligned when performing a withstand voltage test on a high-frequency transformer.

[0006] In order to solve the above problems, the present invention provides an intelligent high-frequency transformer withstand voltage test device, including a test bench for performing withstand voltage test on a test body, and a mechanical arm is installed on one side of the test bench, and a plurality of conveyor belts are installed on the test bench, and the top of the conveyor belt is connected to a tester through a rubber sheet, and the top of the tester is provided with symmetrically arranged movable grooves, and the inside of the movable groove is connected with a shaking rod, and the surface of the shaking rod is slidably sleeved with a magnetic ring, and the top surface of the magnetic ring is fixedly installed with an elastic telescopic column, and the top of the elastic telescopic column is connected to a supporting plate with a friction strip on the top, and one end of the shaking rod is sleeved with a follower gear, and the surface of the follower gear close to the magnetic ring is inlaid with an electromagnetic ring, and an electromagnetic strip and a magnetic rack distributed on both sides of the electromagnetic strip are installed inside the tester, and the magnetic rack and the follower gear are meshed with each other;

[0007] The surface of the tester is provided with a detection hole corresponding to the bottom of the test body, and a test board is installed on the inner top wall of the tester, and the test board is connected to the magnetic rack signal;

[0008] The surface of the testing platform is provided with through grooves which are symmetrically arranged with respect to the conveyor belt, and the bottoms of the two through grooves are respectively connected with a good product area and a waste product area located in the testing platform.

[0009] In the above-mentioned intelligent high-frequency transformer withstand voltage test equipment, the tester can provide an intelligent alignment operation of the test body without occupying a large space, and can realize efficient detection operation in a limited space.

[0010] As a further improvement of the present application, the elastic telescopic column includes a micro electric rod and a spring sleeved on the outside of the micro electric rod, and the height of the elastic telescopic column is smaller than the height of the test body.

[0011] As a further improvement of the present application, the inner walls on both sides of the tester are provided with openings matching the magnetic racks, and the cross-sectional size of the movable groove is larger than the diameter of the elastic telescopic column.

[0012] As a further improvement of the present application, a plurality of photosensors are embedded and installed on the top surface of the tester, and the enclosed size of the photosensors is the same as the bottom size of the test body. The support plate is made of transparent material, and a projection light strip corresponding to the conveyor belt is arranged above the detection table.

[0013] As a further improvement of the present application, the cross-sectional widths of the good product area and the waste product area are not less than the cross-sectional width of the test body, and both the good product area and the waste product area are frame structures made of elastic material.

[0014] As a further improvement of the present application, a test control system is also included, which includes a processor installed on a test table, and the processor is connected to an alignment detection module, a placement correction module, a release detection module and a selection and placement module. The alignment detection module is connected to the photosensitive sensor signal and is used to detect the alignment state of the test body with the detection hole on the surface of the tester after the test body is placed on the surface of the pallet. The placement correction module is connected to the electromagnetic strip and the electromagnetic coil signal and is used to adjust and correct the placement position of the test body. The release detection module is connected to the electromagnetic strip signal and is used to release the test body on the pallet to the tester for testing. The selection and placement module is connected to the micro-electric rod, the test board and the electromagnetic coil and the electromagnetic strip signal and is used to separate the tested test body from the surface of the tester.

[0015] As another improvement of the present application, symmetrically arranged micro electric extension poles are installed inside the support plate, and the power ends of the micro electric extension poles are connected to shafts, and the two shafts are respectively located at one quarter and three quarters of the length of the support plate.

[0016] As another improved supplement of the present application, the micro electric extension rod is connected to the test board signal, a pressure sensor is installed on the surface of the shaft, and the pressure sensor is connected to the electromagnetic strip signal.

[0017] To summarize, when the tester is used to perform intelligent correction on the misplaced test body, the alignment detection module is used to detect the alignment status of the test body and the detection hole on the surface of the tester, and targeted correction processing is performed according to the detected alignment status. The electromagnetic strip and electromagnetic ring, the follower gear and the support plate are used to achieve correction alignment. After alignment, the electromagnetic strip attracts the two magnetic racks, the follower gear expands outward, and the test body falls to the surface of the tester for testing; after the test, it is transported to the good product area or the waste area. In addition, the shaft and the micro-electric extension rod are used to cooperate so that the test body can enter the good product area or the waste area by vertical descent when leaving the surface of the tester, thereby reducing the cross-sectional occupancy of the good product area or the waste area, and then at least one more detection line is added in the detection table with limited size to improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application;

[0019] Figure 2 A top view of a testing platform according to a first embodiment of the present application;

[0020] Figure 3 This is an internal installation diagram of a tester according to the first embodiment of the present application;

[0021] Figure 4 This is a diagram of the installation of the electromagnetic ring on the surface of the magnetic ring and the follower gear of the first embodiment of the present application;

[0022] Figure 5 This is a state diagram of the test body being released and dropped onto the surface of the tester after alignment according to the first embodiment of the present application;

[0023] Figure 6 This is a schematic diagram of alignment state detection according to the first embodiment of the present application;

[0024] Figure 7 This is an internal state diagram of the test body of the first embodiment of the present application, when it leaves the tester surface and enters the good product area;

[0025] Figure 8 This is a schematic diagram of the installation of the shaft and the support plate of the second embodiment of the present application;

[0026] Fig. 9 This is a state diagram of the shaft member extending out of the interior of the support plate according to the first embodiment of the present application;

[0027] Fig.10 This is an installation diagram of a micro electric extension pole according to the first embodiment of the present application;

[0028] Fig.11 This is a diagram showing a tilted state of the test body according to the first embodiment of the present application.

[0029] Description of the numbers in the figure:

[0030] 1. Testing table; 2. Conveyor belt; 3. Tester; 31. Shaking rod; 32. Magnetic ring; 33. Elastic telescopic column; 34. Support plate; 35. Electromagnetic strip; 36. Magnetic rack; 37. Follower gear; 4. Good product area; 5. Waste product area; 6. Shaft; 7. Micro electric extension rod; 001. Test body. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-4The invention shows an intelligent high-frequency transformer withstand voltage test device, which includes a test bench 1 for conducting withstand voltage test on a test body 001, and a mechanical arm is installed on one side of the test bench 1, and a plurality of conveyor belts 2 are installed on the test bench 1, and a tester 3 is connected to the top of the conveyor belt 2 through a rubber sheet, and a symmetrically arranged movable groove is provided on the top of the tester 3, and a shaking rod 31 is connected inside the movable groove, and a magnetic ring 32 is slidably sleeved on the surface of the shaking rod 31, and an elastic telescopic column 33 is fixedly installed on the top surface of the magnetic ring 32, and a support plate 34 with a friction strip on the top is connected to the top of the elastic telescopic column 33, and a follower gear 37 is sleeved on one end of the shaking rod 31, and an electromagnetic ring is embedded and installed on the surface of the follower gear 37 close to the magnetic ring 32, and an electromagnetic strip 35 and magnetic racks 36 distributed on both sides of the electromagnetic strip 35 are installed inside the tester 3, and the magnetic rack 36 and the follower gear 37 are meshed with each other;

[0034] The surface of the tester 3 is provided with a detection hole corresponding to the bottom of the test body 001, and a test board is installed on the inner top wall of the tester 3, and the test board is connected to the magnetic rack 36 by signal;

[0035] The surface of the testing platform 1 is provided with through grooves symmetrically arranged with respect to the conveyor belt 2 , and the bottoms of the two through grooves are respectively connected to a good product area 4 and a waste product area 5 located in the testing platform 1 .

[0036] Specifically, the test body 001 is placed on the support plate 34 on the surface of the tester 3 by using a mechanical arm (the mechanical arm is a prior art and is not shown), and the alignment detection module is used to detect whether the test body 001 is aligned with the detection hole on the surface of the tester 3. According to the alignment detected, the direction in which the test body 001 and the surface of the tester 3 need to be corrected and adjusted is determined, and the electromagnetic strip 35 is composed of two electromagnetic blocks at the end;

[0037] If only the horizontal displacement is required, the electromagnetic bar 35 can be used to attract one of the magnetic racks 36 and repel the other magnetic rack 36. At this time, the two follower gears 37 can rotate in the same direction, which can drive the support plate 34 to deflect synchronously in the same direction to achieve the adjustment purpose (such as Figure 5 shown);

[0038] If only the vertical displacement is required, the electromagnetic coil can be used to generate an attractive or repulsive force on the magnetic ring 32, so that the two magnetic rings 32 move forward or backward, thereby achieving an adjustment effect;

[0039] If there is a large offset (both horizontal and vertical offsets, such as Figure 6 As shown), the electromagnetic strip 35 and the electromagnetic coil can be started simultaneously, so that the test body 001 with a larger deviation can be aligned;

[0040] After alignment, the electromagnetic bar 35 is activated to generate an attraction force on both magnetic racks 36, so that the follower gear 37 can expand outwards (such as Figure 5 As shown), the test body 001 originally lifted and placed can be dropped vertically onto the detection hole on the surface of the tester 3. After the pins at the bottom of the test body 001 pass through the detection hole and contact the test, the 3-minute test operation begins;

[0041] After the test is completed, the test board transmits the test result to the selection and placement module, and selects to transport the test body 001 to the corresponding good product area 4 or waste area 5. When it is necessary to transport it to the good product area 4, the electromagnetic strip 35 can be started first to generate a repulsive force with the two magnetic racks 36, so that the two follower gears 37 move inward and are clamped on the outer surface of the test body 001 by the support plate 34. Then, the micro-electric rod is started to drive the clamped test body 001 to separate from the detection hole on the surface of the tester 3, and then the electromagnetic coil is started to generate a force of attraction with the magnetic ring 32, pushing the test body 001 to the direction of the good product area 4 (such as Figure 7 As shown), after the test body 001 leaves the surface of the tester 3, the electromagnetic strip 35 switches its working state, attracts the two magnetic racks 36, releases the clamping state, and the test body 001 falls into the good product area 4 (the operation of falling into the waste area 5 is the same and will not be repeated here).

[0042] In addition, the present application adopts a conveyor belt 2 to perform dynamic conveying operations, and can complete the detection operation during the transportation of the test body 001 (the time for the conveyor belt 2 to make one circle is greater than 3 minutes, so after the robot arm takes and places the test body 001 to the surface of the tester 3, there is enough time for self-correction under different swing states. Compared with the correction and positioning facilities of multi-station detection in the prior art, which are either centralized and unified and cannot adapt to different swing correction needs, or are applied separately, resulting in a large space occupation, the present application achieves efficient correction while also ensuring efficient multi-station detection and a small space occupation).

[0043] The elastic telescopic column 33 includes a micro electric rod and a spring sleeved on the outside of the micro electric rod, and the height of the elastic telescopic column 33 is smaller than the height of the test body 001 .

[0044] Specifically, the height of the elastic telescopic column 33 is not high, so as to avoid the risk of impact damage caused by falling with a large height difference.

[0045] The inner walls on both sides of the tester 3 are provided with openings matching the magnetic rack 36 , and the cross-sectional size of the movable groove is larger than the diameter of the elastic telescopic column 33 .

[0046] Specifically, the design of the opening facilitates the outward movement of the magnetic rack 36, and the design of the cross-sectional size of the movable groove facilitates sufficient movable space for the rocking rod 31 when it is deflected.

[0047] A plurality of photosensors are embedded and installed on the top surface of the tester 3 , and the enclosed size of the photosensors is the same as the bottom size of the test body 001 . The support plate 34 is made of transparent material. A projection light belt corresponding to the conveyor belt 2 is arranged above the test platform 1 .

[0048] Specifically, by using the projection of a projection light strip (not shown), a lighting area can be formed on the surface of the tester 3. When the test body 001 is in an unaligned state, the values ​​detected by the photosensors on the surface of the tester 3 are not uniform. At this time, the direction in which the placement of the test body 001 needs to be corrected can be determined based on the difference in the detected values.

[0049] The cross-sectional widths of the good product area 4 and the waste product area 5 are not less than the cross-sectional width of the test body 001, and both the good product area 4 and the waste product area 5 are frame structures made of elastic material.

[0050] Specifically, the structure made of elastic material can prevent the test body 001 from having a rigid collision when it is dropped and collected. Similarly, the design of the cross-sectional width value can facilitate the test body 001 to smoothly enter the good product area 4 or the waste product area 5 when it falls in a horizontal state.

[0051] It also includes a test control system, which includes a processor installed on the test table 1, and the processor is connected to an alignment detection module, a placement correction module, a release detection module and a selection and placement module. The alignment detection module is connected to the light-sensitive sensor signal, and is used to detect the alignment state of the test body 001 with the detection hole on the surface of the tester 3 after it is placed on the surface of the support plate 34. The placement correction module is connected to the electromagnetic strip 35 and the electromagnetic coil signal, and is used to adjust and correct the placement position of the test body 001. The release detection module is connected to the electromagnetic strip 35 signal, and is used to release the test body 001 on the support plate 34 to the tester 3 for testing. The selection and placement module is connected to the micro-electric rod, the test board and the electromagnetic coil as well as the electromagnetic strip 35 signal, and is used to separate the tested test body 001 from the surface of the tester 3.

[0052] The second implementation method:

[0053] Figure 8 and Fig.10 It is shown that symmetrically arranged micro electric extension poles 7 are installed inside the support plate 34 , and the power end of the micro electric extension pole 7 is connected to an axis 6 , and the two axis 6 are respectively located at one quarter and three quarters of the length of the support plate 34 .

[0054] The micro electric extension rod 7 is connected to the test board by signal, a pressure sensor is installed on the surface of the shaft 6 , and the pressure sensor is connected to the electromagnetic strip 35 by signal.

[0055] Different from the first embodiment, this embodiment improves the phenomenon in the first embodiment that the horizontal drop of the test body 001 causes the cross-sectional size of the good product area 4 to be larger, thereby limiting the number of conveyor belts 2 installed on the surface of the testing platform 1.

[0056] Specifically, in order to reduce the projection area of ​​the test body 001 in the vertical direction when it falls, the test body 001 needs to be in a downward tilted state when it falls, so that it can enter the good product area 4 or the waste area 5 in a vertical landing manner after leaving the surface of the tester 3. In this way, the cross-sectional width value of the good product area 4 or the waste area 5 can be reduced, and then at least one conveyor belt 2 can be added to the limited size of the detection table 1 to improve the detection efficiency.

[0057] In order to achieve the purpose of separating the test body 001 from the tester 3 in an inclined manner, the corresponding micro-electric extension rod 7 can be activated as needed after the test is completed (taking the test body 001 as a good product as an example, the micro-electric extension rod 7 close to the waste area 5 can be activated at this time, so that the contact position between the shaft 6 and the test body 001 is at a backward position, and then the direction of the tilt after lifting is toward the good product area 4, such as Fig. 9 As shown in FIG. 1 ), the shaft 6 connected thereto is driven to extend out of the surface of the support plate 34, and then the support plate 34 is clamped on the surface of the test body 001, and then the micro-electric rod is started to lift the test body 001 (because the shaft 6 is not located in the middle position, the test body 001 is in a tilted state under the action of the shaft 6 under its own weight after lifting, as shown in FIG. Fig.11 As shown), the electromagnetic coil and the magnetic ring 32 cooperate with each other to drive the test body 001 to gradually reach the half of the surface of the tester 3, and then release the clamping of the support plate 34, so that the test body 001 can be vertically dropped.

[0058] In summary, when the tester 3 is used to perform intelligent correction on the misplaced test body 001, the alignment detection module is used to detect the alignment status of the test body 001 and the detection hole on the surface of the tester 3, and targeted correction processing is performed according to the detected alignment status, and the electromagnetic strip 35 and the electromagnetic ring, the follower gear 37 and the support plate 34 are used to achieve correction alignment. After alignment, the electromagnetic strip 35 attracts the two magnetic racks 36, the follower gear 37 expands outward, and the test body 001 falls to the surface of the tester 3 for testing; after the test, the result is sent to the selection module and transported to the good area 4 or the waste area 5. In addition, the shaft 6 and the micro-electric extension rod 7 are used to cooperate so that the test body 001 can enter the good area 4 or the waste area 5 by vertical descent when leaving the surface of the tester 3, thereby reducing the cross-sectional area occupancy of the good area 4 or the waste area 5, and then at least one more detection line is added to the detection table 1 with limited size to improve the detection efficiency.

[0059] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An intelligent high-frequency transformer withstand voltage test device, comprising a test bench (1) for performing a withstand voltage test on a test body (001), wherein a mechanical arm is installed on one side of the test bench (1), and characterized in that: The testing platform (1) is provided with a plurality of conveyor belts (2), the top of the conveyor belts (2) being connected to a tester (3) via a rubber sheet, the top of the tester (3) being provided with symmetrically arranged movable grooves, the inside of the movable grooves being connected with a shaking rod (31), the surface of the shaking rod (31) being slidably sleeved with a magnetic ring (32), the top surface of the magnetic ring (32) being fixedly mounted with an elastic telescopic column (33), the top of the elastic telescopic column (33) being connected with a supporting plate (34) having a friction strip on the top, one end of the shaking rod (31) being sleeved with a follower gear (37), the surface of the follower gear (37) being inlaid with an electromagnetic ring near the magnetic ring (32), the inside of the tester (3) being provided with an electromagnetic strip (35) and magnetic racks (36) distributed on both sides of the electromagnetic strip (35), and the magnetic racks (36) being meshed with the follower gear (37); The surface of the tester (3) is provided with a detection hole corresponding to the bottom of the test body (001); a test board is installed on the inner top wall of the tester (3), and the test board is signal-connected to the magnetic rack (36); The surface of the inspection table (1) is provided with through grooves symmetrically arranged with respect to the conveyor belt (2), and the bottoms of the two through grooves are respectively connected to a good product area (4) and a waste product area (5) located in the inspection table (1); The inner walls on both sides of the tester (3) are provided with openings matching the magnetic rack (36), and the cross-sectional size of the movable groove is larger than the diameter of the elastic telescopic column (33); A plurality of light sensors are embedded and mounted on the top surface of the tester (3), and the enclosed size of the light sensors is the same as the bottom size of the test body (001). The support plate (34) is made of a transparent material. A projection light belt corresponding to the conveyor belt (2) is arranged above the detection platform (1).

2. The intelligent high-frequency transformer withstand voltage test equipment according to claim 1, characterized in that: The elastic telescopic column (33) comprises a micro electric rod and a spring sleeved on the outside of the micro electric rod, and the height of the elastic telescopic column (33) is smaller than the height of the test body (001).

3. The intelligent high-frequency transformer withstand voltage test equipment according to claim 1, characterized in that: The cross-sectional widths of the good product area (4) and the waste product area (5) are not less than the cross-sectional width of the test body (001), and the good product area (4) and the waste product area (5) are both frame structures made of elastic material.

4. The intelligent high-frequency transformer withstand voltage test equipment according to claim 1, characterized in that: The invention also comprises a test control system, the test control system comprising a processor mounted on the test platform (1), the processor being connected to an alignment detection module, a placement correction module, a release detection module and a selection and placement module, the alignment detection module being connected to a light-sensitive sensor signal and used for detecting the alignment state of the test body (001) with the detection hole on the surface of the tester (3) after the test body (001) is placed on the surface of the support plate (34), the placement correction module being connected to an electromagnetic strip (35) and an electromagnetic coil signal and used for adjusting and correcting the placement position of the test body (001), the release detection module being connected to an electromagnetic strip (35) signal and used for releasing the test body (001) on the support plate (34) to the tester (3) for testing, and the selection and placement module being connected to a micro-electric rod, a test plate, an electromagnetic coil and an electromagnetic strip (35) signal and used for separating the tested test body (001) from the surface of the tester (3).

5. The intelligent high-frequency transformer withstand voltage test equipment according to claim 1, characterized in that: The support plate (34) is internally mounted with symmetrically arranged micro electric extension poles (7), and the power ends of the micro electric extension poles (7) are connected to shaft members (6), and the two shaft members (6) are respectively located at positions of one quarter and three quarters of the length of the support plate (34).

6. The intelligent high-frequency transformer withstand voltage test equipment according to claim 5, characterized in that: The micro electric extension rod (7) is connected to the test board by signal, a pressure sensor is installed on the surface of the shaft (6), and the pressure sensor is connected to the electromagnetic strip (35) by signal.

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