Device for detecting insulating property of transformer insulating part

Abstract

The invention relates to an insulating property detection device for a transformer insulating part, and belongs to the technical field of transformer insulating parts, the insulating property detection device comprises a detection box body and a supporting box body fixedly mounted on the bottom surface of the detection box body, and a protection door for protection is rotatably mounted on the right side of the front surface of the detection box body; the upper side of the front surface of the protective door is fixedly provided with an intelligent megohmmeter used for insulation resistance detection, and the left and right sides of the lower side of the inner wall of the detection box body are fixedly provided with a moving assembly used for moving an insulating part together through fixed electric sliding rails. According to the invention, electrical performance detection and mechanical performance detection can be simultaneously carried out on the transformer insulating part with an epoxy resin plate structure, and the overall use performance of the transformer insulating part is improved by utilizing the detection effects of two different performances of the device; the workload of detecting the transformer insulating part like an epoxy resin plate can be prevented from being increased, and the overall detection efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer insulation parts, in particular to a transformer insulation part insulation performance detection device. BACKGROUND

[0002] The transformer insulation part is a key component in the transformer, which plays a role of electrical insulation, mechanical support and fixation, and its performance directly affects the safe operation of the equipment. The transformer insulation part includes many kinds, such as epoxy resin plate, insulation cylinder, angle ring, fixed winding, lead wire and other components. After the processing of the transformer insulation part is completed, its insulation needs to be detected to ensure its normal use function. The device for detecting the insulation performance of the transformer insulation part is called a transformer insulation part insulation performance detection device. Due to the use characteristics of the transformer insulation part insulation performance detection device, it is often used to detect the insulation parts of intelligent large-scale and direct current converter transformers.

[0003] Among them, the epoxy resin plate is one of the important solid insulation parts in the transformer, which plays a role of electrical isolation and mechanical support. In the process of insulation performance detection, not only the electrical performance detection, that is, the insulation resistance test, but also the mechanical performance detection is needed. Because the epoxy resin plate not only plays an insulation role in the transformer, but also needs to withstand the electromagnetic force, vibration and other mechanical stress of the winding, if the mechanical strength is insufficient, it may cause cracks, breakage or deformation, damage the integrity of the insulation structure, and cause partial discharge or breakdown. Therefore, the mechanical performance detection of the epoxy resin plate is also an important part of the insulation performance detection. The important mechanical performance detection of the epoxy resin plate is the test of its bending strength. Because the bending strength detection simulates the anti-deformation ability of the insulation part under the action of the winding electromagnetic force, and thus the insulation use effect of the insulation part can be ensured.

[0004] However, the traditional transformer insulation part insulation performance detection device cannot achieve the electrical performance detection and mechanical performance detection of the insulation part such as the epoxy resin plate at the same time. Therefore, the detection of the epoxy resin plate insulation part needs to be carried out in several times. However, the detection in several times not only increases the work load of the epoxy resin plate insulation part detection, but also reduces the efficiency of the epoxy resin plate insulation part detection. Therefore, a device capable of simultaneously detecting the electrical performance and mechanical performance of the epoxy resin plate insulation part is needed. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a transformer insulation part insulation performance detection device, which solves the problem that the traditional device cannot simultaneously detect the electrical performance and mechanical performance of the insulation part such as the epoxy resin plate, avoids increasing the work load of the epoxy resin plate insulation part detection, and improves the efficiency of the epoxy resin plate insulation part detection.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a transformer insulation piece insulation performance detection device, comprising a detection box and a support box fixedly installed on the bottom surface of the detection box, a protective door for protection is rotatably installed on the right side of the front of the detection box, and an intelligent megohmmeter for insulation resistance detection is fixedly installed on the upper side of the front of the protective door, and the left and right sides of the lower side of the inner wall of the detection box are both fixedly installed with a moving assembly for moving the insulation piece through a fixed electric slide rail, the left and right sides of the rear side of the inner wall of the detection box are both provided with a pushing assembly for extrusion detection, and the top surfaces of the two pushing assemblies are connected with the intelligent megohmmeter through a connecting line body penetrating the protective door, and a stretching assembly for pushing and stretching is arranged between the two pushing assemblies below the rear side of the inner wall of the detection box.

[0007] Further, the moving assembly comprises a moving plate fixedly installed on the opposite surfaces of the electric slide rail, and a support plate for supporting is fixedly installed on the top surface of the moving plate, and extrusion elastic plates for clamping and fixing are fixedly installed on the left and right sides of the top surface of the support plate, and first trapezoidal grooves for sliding are formed on the left and right sides of the bottom surface of the moving plate, first trapezoidal blocks matched with the first trapezoidal grooves are fixedly installed on the front sides of the inner walls of the two first trapezoidal grooves through fixed first damping springs, and arc head push blocks for pushing are fixedly installed on the bottom surfaces of the two first trapezoidal blocks.

[0008] Further, the pushing assembly comprises an extrusion arc plate rotatably installed on the rear side of the inner wall of the detection box, and the bottom surface of the extrusion arc plate is fixedly installed with a pulling bent plate for pulling through a connecting piece; The connecting piece comprises two first connecting frames, and fixed extension rods are fixedly installed on the inner walls of the two first connecting frames through a sliding first connecting shaft, and fixed rod shells for connection are slidingly installed on the rod walls of the fixed extension rods, a second connecting frame for connection is slidingly installed on the bottom surface of the fixed rod shell through a fixed second connecting shaft, a limiting block for limiting is movably fixedly installed on the inner wall of the fixed rod shell in the fixed extension rod, a pushing spring for elastic pushing is fixedly installed on the top surface of the limiting block, and the top surface of the extrusion arc plate is fixedly connected with the rear side of the inner wall of the detection box through a fixed tension spring.

[0009] Further, the stretching assembly comprises an electric telescopic rod fixedly installed on the rear side of the inner wall of the detection box, and the output end of the electric telescopic rod is fixedly installed with a pushing arc block for pushing, the lower side of the inner wall of the detection box is provided below the pushing arc block with a moving cavity for moving, and the upper side of the inner wall of the moving cavity is provided below the pushing arc block with two communication ports for communication, and the inner walls of the two communication ports are both slidably installed with a connecting block for connecting, the bottom surfaces of the two connecting blocks are fixedly installed with a moving horizontal plate for moving, and the left and right sides of the front of the moving horizontal plate are both fixedly installed with a linkage block for pushing, and the top surfaces of the two linkage blocks are both provided with an extrusion assembly for extruding and clamping.

[0010] Further, the extrusion assembly comprises an arc surface inclined block fixedly installed on the top surface of the linkage block, and the top surface of the arc surface inclined block is provided with a moving vertical groove plate for moving up and down, the inner wall of the moving vertical groove plate is in contact with the arc surface of the arc surface inclined block through a pushing wheel rotating, the inside of the detection box is provided above the moving vertical groove plate with a rotating cavity for rotating, the top surface of the moving vertical groove plate is fixedly connected with the upper side of the inner wall of the rotating cavity through two second damping springs, and the surface of the moving vertical groove plate is fixedly installed on one side of the inner wall of the rotating cavity with a plurality of tooth blocks for meshing connection, the surfaces of a plurality of corresponding tooth blocks are meshingly connected with a gear for transmission, and the inner wall of the gear is threadedly connected with a U-shaped connecting frame for moving through a fixed threaded rod; The upper and lower surfaces of the U-shaped connecting frame close to the moving assembly are both slidably installed with a moving clamping plate for moving clamping, and the front and rear surfaces of the moving clamping plate are both rotatably installed with a guide multi-hole block for guiding through two rotating guide rotating rods.

[0011] Further, the front ends of the two extrusion elastic plates are both arc heads upwardly curved, and the extrusion elastic plates and the supporting plates are both PVC plastic materials, and the rear surface of the protective door is clamped with the front side of the inner wall of the detection box.

[0012] Further, the two extrusion arc plates each comprise an intermediate flat portion and two curved portions, the two curved portions respectively extend upwardly from the front and rear sides of the intermediate flat portion, the top surface of the curved portion on the front side is provided with an arc head, the bottom surface of the intermediate flat portion is fixedly installed with a conductive copper plate for conducting electricity, the surface of the conductive copper plate is fixedly connected with one end of the connecting wire body, and the two pulling bent plates are L-shaped rod body structures, and the opening sides of the pulling bent plates are provided at an angle of 135°.

[0013] Further, the top surfaces of the two corresponding first connecting frames are fixedly connected with the bottom surfaces of the extrusion arc plates, the bottom surfaces of the two corresponding second connecting frames are fixedly connected with the top surfaces of the pulling bent plates, the two pulling bent plates are provided on one side of the arc head pushing block, and the inner walls of the two pulling springs are respectively sleeved with the rod walls of the corresponding fixed extension rods.

[0014] Furthermore, the upper edge of the pushing arc block is rounded and fits against the surface of the arc head push block, and the surfaces of the two connecting blocks are respectively in close contact with the inner wall of the corresponding connecting port.

[0015] Furthermore, the top surfaces of the two movable vertical slot plates extend through the upper side of the corresponding movable cavity inner wall to the interior of the rotating cavity. The opposite ends of the two threaded rods are rotatably connected to one side of the corresponding rotating cavity inner wall, and the opposite sides of the two threaded rods extend through the other side of the corresponding rotating cavity inner wall to the interior of the detection box. The multiple guide porous blocks are all plate structures with two symmetrical bends on one side. Several guide porous blocks have through slots for the passage of insulating parts on the side near the movable component. The through slots are flared slots located in the middle of the upper and lower inner walls of the guide porous blocks. The height of the through slots is one centimeter above the support plate. The two rotating cavities have a second trapezoidal groove on the side near the movable vertical slot plate, and the inner wall of the second trapezoidal groove is fixedly connected to the surface of the movable vertical slot plate through a sliding second trapezoidal block. The rod walls of the two threaded rods are fixedly installed with limiting ring blocks for limiting on one side of the rotating cavity, and the surface of the limiting ring blocks is rotatably connected to the inner wall of the rotating cavity. The two corresponding movable clamping plates are fixedly installed with rubber pads for protection on opposite sides.

[0016] Compared with the prior art, the present invention provides a device for testing the insulation performance of transformer insulating components, which has the following advantages: 1. This device can simultaneously perform electrical and mechanical performance tests on transformer insulation components with epoxy resin board structures. By utilizing the device's ability to perform two different performance tests, its overall usability is increased. Furthermore, during use, the device can avoid increasing the workload of testing transformer insulation components such as epoxy resin boards, thereby improving the overall testing efficiency of the device.

[0017] 2. By squeezing the plastic material of the spring plate and support plate, this device not only ensures that the device will not damage the insulating parts when testing them, but also positions the insulating parts, facilitating subsequent linkage testing and increasing the applicability of the device.

[0018] 3. The device utilizes the straight and warped sections in the middle of the extrusion arc plate to ensure that the rotation of the extrusion arc plate can drive the conductive copper plate to extrude the insulating parts in a straight manner, ensuring better detection of the insulating parts. Furthermore, the use of flat contact detection can avoid affecting the accuracy of subsequent mechanical detection and increase the accuracy of the device during the detection process.

[0019] 4. The device, through the arc setting of the arc block, can better push the arc head push block, and can ensure that the arc head push block moves backward under the push of the electric telescopic rod, thereby relieving the problem of the conductive copper plate squeezing the insulating parts, and facilitating the mechanical inspection of the insulating parts in the later stage.

[0020] 5. The device utilizes the slot design to ensure that the insulating components can better enter the movable clamping plate, which facilitates the clamping effect of the movable clamping plate later. The rubber pad will not damage the insulating components during the stretching process, thus avoiding affecting the mechanical performance testing effect. Attached Figure Description

[0021] Figure 1 This is a perspective view of the entire invention; Figure 2 This is a perspective view of the protective door of the present invention unfolded. Figure 3 This is a vertical sectional perspective view of the entire invention; Figure 4 This is a perspective view of the combination of the moving component and the stretching component of the present invention; Figure 5 This is a perspective view of the unfolded moving component of the present invention; Figure 6 This is a perspective view of the component driving the present invention; Figure 7 This is a vertical sectional perspective view of the fixing rod shell of the present invention; Figure 8 This is a perspective view of the stretching component of the present invention; Figure 9 This is a perspective view of the unfolded stretching component of the present invention; Figure 10 For the present invention Figure 9 A magnified structural diagram of structure A is shown below; Figure 11 This is a three-dimensional view of the detection chamber of the present invention; Figure 12 This is a longitudinal sectional perspective view of the testing chamber of the present invention; Figure 13 For the present invention Figure 12 A magnified structural diagram of B is shown.

[0022] In the diagram: 1. Detection box; 2. Support box; 3. Protective door; 4. Intelligent megohmmeter; 5. Electric slide rail; 6. Moving component; 601. Moving plate; 602. Support plate; 603. Extrusion spring plate; 604. First trapezoidal groove; 605. First damping spring; 606. First trapezoidal block; 607. Arc head push block; 7. Pushing component; 701. Extrusion arc plate; 7011. Middle straight section; 7012. Warped section; 7013. Conductive copper plate; 702. Pulling bending plate; 8. Tensioning component; 801. Electric telescopic rod; 802. Pushing arc block; 803. Moving cavity; 804. Connecting port; 805. Connecting block; 806. Moving horizontal plate; 807. Linkage block; 9. Connecting line; 10. Connector; 1001 1002. First connecting frame; 1003. Fixed extension rod; 1004. Fixed rod shell; 1005. Second connecting shaft; 1006. Second connecting frame; 1007. Limiting block; 1008. Push spring; 1009. Tension spring; 11. Extrusion assembly; 1101. Arc-shaped inclined block; 1102. Moving vertical groove plate; 1103. Push wheel; 1104. Rotating cavity; 1105. Second damping spring; 1106. Tooth block; 1107. Gear; 1108. Threaded rod; 1109. U-shaped connecting frame; 1110. Moving clamping plate; 1111. Guide rotating rod; 1112. Guide multi-hole block; 12. Through groove; 13. Second trapezoidal groove; 14. Second trapezoidal block; 15. Limiting ring block; 16. Rubber pad. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1 to 13This embodiment of a transformer insulation performance testing device includes a testing box 1 and a support box 2 fixedly installed on the bottom surface of the testing box 1. A protective door 3 is rotatably installed on the right side of the front of the testing box 1. The rear of the protective door 3 is interlocked with the front side of the inner wall of the testing box 1. An intelligent megohmmeter 4 for insulation resistance testing is fixedly installed on the upper side of the front of the protective door 3. Moving components 6 for moving insulation components are fixedly installed on the left and right sides of the lower side of the inner wall of the testing box 1 through fixed electric slide rails 5. Pushing components 7 for compression testing are provided on the left and right sides of the rear side of the inner wall of the testing box 1. The top surfaces of the two pushing components 7 are connected to the intelligent megohmmeter 4 through the protective door 3 via connecting lines 9. A stretching component 8 for pushing and stretching is provided on the lower rear side of the inner wall of the testing box 1 between the two pushing components 7.

[0025] The movable component 6 includes movable plates 601 fixedly mounted on opposite sides of the electric slide rail 5. A support plate 602 is fixedly mounted on the top surface of the movable plate 601. On the left and right sides of the top surface of the support plate 602, compression spring plates 603 for snap-fit ​​fixation are fixedly mounted. The front ends of the two compression spring plates 603 are both curved upwards. Both the compression spring plates 603 and the support plate 602 are made of PVC plastic. The plastic structure can avoid affecting the resistance of the insulation component detected by the device, thereby ensuring the accuracy of the device during the detection process. The left and right sides of the bottom surface of the movable plate 601 are provided with first trapezoidal grooves 604 for sliding. The front side of the inner wall of the two first trapezoidal grooves 604 is fixedly mounted with first trapezoidal blocks 606 that match the first trapezoidal grooves 604 by fixed first damping springs 605. The bottom surfaces of the two first trapezoidal blocks 606 are fixedly mounted with arc-shaped push blocks 607 for pushing.

[0026] The pushing component 7 includes a compression arc plate 701 rotatably mounted on the rear side of the inner wall of the detection box 1. Both compression arc plates 701 include a central straight portion 7011 and two warped portions 7012. The two warped portions 7012 extend upwards from the front and rear sides of the central straight portion 7011, respectively. The top surface of the front warped portion 7012 is arc-shaped, while a conductive copper plate 7013 for conducting electricity is fixedly mounted on the bottom surface of the central straight portion 7011. The surface of the conductive copper plate 7013 is fixedly connected to one end of the connecting wire 9. The compression arc plate 701 utilizes various internal components... The design ensures that the extrusion arc plate 701 fits better with the insulating component after rotation. The bottom surface of the extrusion arc plate 701 is fixedly installed with a pulling bent plate 702 for pulling via the connector 10. The two pulling bent plates 702 are located on one side of the arc head push block 607. The two pulling bent plates 702 have an L-shaped rod structure, and the included angle of the opening side of the pulling bent plates 702 is set at 135°. The opening of the pulling bent plates 702 can better contact the arc head push block 607, and the arc head push block 607 can squeeze the pulling bent plates 702 to drive the tensioning component 8 to move, ensuring the normal use effect of the internal structure of the device. The connector 10 includes two first connecting frames 1001. The top surfaces of the two corresponding first connecting frames 1001 are fixedly connected to the bottom surface of the extrusion arc plate 701. A fixed extension rod 1003 is fixedly mounted on the inner wall of the two first connecting frames 1001 via a sliding first connecting shaft 1002. A fixed rod shell 1004 for connection is slidably mounted on the rod wall of the fixed extension rod 1003. A second connecting frame 1006 for connection is slidably mounted on the bottom surface of the fixed rod shell 1004 via a fixed second connecting shaft 1005. The bottom surface of the corresponding second connecting frame 1006 is fixedly connected to the top surface of the pulling bending plate 702. The fixed extension rod 1003 is located on the inner wall of the fixed rod shell 1004 and is fixedly installed with a limiting block 1007 for limiting. The top surface of the limiting block 1007 is fixedly installed with a push spring 1008 for elastic pushing. The inner walls of the two push springs 1008 are respectively sleeved with the rod wall of the corresponding fixed extension rod 1003. The top surface of the extrusion arc plate 701 is fixedly connected to the rear side of the inner wall of the detection box 1 through a fixed tension spring 1009.

[0027] The tensioning assembly 8 includes an electric telescopic rod 801 fixedly installed on the rear side of the inner wall of the detection chamber 1. A pushing arc block 802 for pushing is fixedly installed at the output end of the electric telescopic rod 801. The upper front corner of the pushing arc block 802 is rounded and fits against the surface of the arc head push block 607. The rounded structure is for better pushing of the arc head push block 607. A moving cavity 803 for movement is formed on the lower side of the inner wall of the detection chamber 1 below the pushing arc block 802. The upper part of the inner wall of the moving cavity 803 is located above the pushing arc block 802. Two connecting ports 804 are provided below 02 for communication. Connecting blocks 805 are slidably installed on the inner walls of the two connecting ports 804 for connection. The surfaces of the two connecting blocks 805 are tightly fitted to the inner walls of the corresponding connecting ports 804. A movable horizontal plate 806 for movement is fixedly installed on the bottom surface of the two connecting blocks 805. A linkage block 807 for pushing is fixedly installed on the left and right sides in front of the movable horizontal plate 806. A pressing component 11 for pressing and clamping is provided on the top surface of the two linkage blocks 807.

[0028] The extrusion assembly 11 includes an arc-shaped inclined block 1101 fixedly mounted on the top surface of the linkage block 807. The top surface of the arc-shaped inclined block 1101 is provided with a movable vertical groove plate 1102 for vertical movement. The top surfaces of the two movable vertical groove plates 1102 extend through the upper side of the inner wall of the corresponding movable cavity 803 to the interior of the rotating cavity 1104. The inner wall of the movable vertical groove plate 1102 contacts the arc surface of the arc-shaped inclined block 1101 via a rotating push wheel 1103. The interior of the detection box 1, above the movable vertical groove plate 1102, has a rotating cavity 1104 for rotation. The top surface of the movable vertical groove plate 1102 is connected to the rotating cavity via two second damping springs 1105. The upper side of the inner wall of the rotating cavity 1104 is fixedly connected, and a number of tooth blocks 1106 for meshing connection are fixedly installed on the surface of the movable vertical groove plate 1102 located on one side of the inner wall of the rotating cavity 1104. The surfaces of the corresponding tooth blocks 1106 are meshed with gears 1107 for transmission. The inner wall of the gear 1107 is threadedly connected to a U-shaped connecting frame 1109 for movement through a fixed threaded rod 1108. The opposite ends of the two threaded rods 1108 are respectively rotatably connected to one side of the inner wall of the corresponding rotating cavity 1104, and the opposite sides of the two threaded rods 1108 respectively extend through the other side of the inner wall of the corresponding rotating cavity 1104 to the interior of the detection box 1. The U-shaped connecting frame 1109 has movable clamping plates 1110 slidably installed on both the upper and lower sides near the movable component 6. The front and rear sides of the movable clamping plate 1110 are rotatably mounted with guide multi-hole blocks 1112 for guidance via two rotating guide rods 1111. The multiple guide multi-hole blocks 1112 are all plate structures with two symmetrical bends on one side. Several guide multi-hole blocks 1112 have through grooves 12 for the passage of insulating parts on the side near the movable component 6. The through grooves 12 are flared grooves with a gradually expanding opening. The flared structure is a geometric design that can better ensure that the insulating parts pass through the expanded end of the flared opening and enter between the two movable clamping plates 1110. The through grooves 12 are located in the middle of the upper and lower inner walls of the guide multi-hole blocks 1112. The height of the through grooves 12 is one centimeter above the support plate 602. The through grooves 12 can ensure that the insulating parts can enter the movable clamping plate 1110 better. Two rotating cavities 1104 have a second trapezoidal groove 13 on one side near the movable vertical slot plate 1102. The inner wall of the second trapezoidal groove 13 is fixedly connected to the surface of the movable vertical slot plate 1102 through a sliding second trapezoidal block 14. The rod walls of the two threaded rods 1108 are fixedly installed with limiting ring blocks 15 for limiting on one side of the rotating cavity 1104. The surface of the limiting ring blocks 15 is rotatably connected to the inner wall of the rotating cavity 1104. The two corresponding movable clamping plates 1110 are fixedly installed with rubber pads 16 for protection on opposite sides. The rubber pads 16 can better clamp the insulating parts and avoid damage to the insulating parts.

[0029] The working principle of the above embodiments is as follows: Before using the device, the transformer insulation component needs to be cut into strips to facilitate the testing of its insulation performance. The cut transformer insulation component is then clamped onto the compression spring plate 603 inside the moving component 6. This ensures that the transformer insulation component is moved stably. The compression spring plate 603 of this device only positions the transformer insulation component being tested and will not cause too much compression to the transformer insulation component. Furthermore, the contact area between the compression spring plate 603 and the transformer insulation component is small, so as not to affect the testing effect of the transformer insulation component. After the transformer insulation component is fixed, the transformer insulation component on the moving component 6 is moved by the electric slide rail 5. During the process of the moving component 6 moving towards the inner wall of the detection box 1, the arc head push block 607 under the moving plate 601 will squeeze and pull the bent plate 702 downward. At this time, the elastic force of the first damping spring 605 is greater than that of the tension spring 1009 and the push spring 1008. Thus, the arc head push block 607 can squeeze and pull the bent plate 702 to rotate around the inside of the detection box 1, thereby pulling the bent plate 702 to drive the squeezing arc plate 701 to approach the transformer insulation component on the support plate 602 through the connector 10. During the downward rotation of the squeezing arc plate 701, the conductive copper plate 7013 set on the squeezing arc plate 701 will contact the transformer insulation component. Thus, the insulation resistance of the transformer insulation component can be measured by the intelligent megohmmeter 4. Measuring the resistance value of the transformer insulation component can reflect the conductivity characteristics and integrity of the insulation structure, thereby measuring the insulation performance of the insulation component. Measuring the resistance performance of the transformer insulation component requires a certain amount of time, which requires the operator to control. After the resistance performance test is completed, the operator can start the tension component 8 to test the mechanical performance of the transformer insulation component. The electric telescopic rod 801 in the tension assembly 8 drives the pushing arc block 802 to move towards the arc head push block 607. During the movement of the pushing arc block 802, the connecting block 805 on the bottom surface of the pushing arc block 802 drives the structure on the moving horizontal plate 806 to move. As the pushing arc block 802 pushes the arc head push block 607 away from the electric telescopic rod 801, the tension of the tension spring 1009 causes the compression arc plate 701 to move away from the transformer insulation component, thereby avoiding interference with the mechanical strength testing of the transformer insulation component. Driven by the arc block 802, the moving horizontal plate 806 causes the arc-shaped inclined block 1101 on the linkage block 807 to move forward towards the detection box 1. This, through the inclined surface compression effect of the arc-shaped inclined block 1101, combined with the rotational connection of the push wheel 1103, ensures the upward movement of the moving vertical slot plate 1102. This upward movement of the moving vertical slot plate 1102, via the gear 1107, causes the U-shaped connecting frame 1109 on the threaded rod 1108 to move away from the moving component 6. This movement, through the U-shaped connecting frame 1109... 09 can drive the movable clamping plate 1110 to move, and the movable clamping plate 1110 and the U-shaped connecting frame 1109 have a vertical sliding effect. In this way, while satisfying the moving effect, the movable clamping plate 1110 can also move up and down on the surface of the U-shaped connecting frame 1109. This ensures that the movable clamping plate 1110 can move on the guide multi-hole block 1112 through the guide rotating rod 1111. Because the guide multi-hole block 1112 has an internally set bend, it can move relative to the movable clamping plate 1110 during the movement, and after the movement, it can move away from the moving assembly. The operation of component 6 ensures that the transformer insulation components are clamped and pulled to test their mechanical properties. The guide multi-hole block 1112 in this application has an internal bend with a straight part and a turning part. When the two moving clamping plates 1110 move in the turning part of the bend, they tend to clamp each other, which can clamp the insulation components. After clamping, they will pass through the straight part, which ensures that the clamped insulation components are stretched. During the clamping process, the rubber pad 16 can ensure that the insulation components are firmly clamped and ensure a better stretching effect. The electric telescopic rod 801 drives the structure, causing the two movable clamping plates 1110 to clamp the transformer insulation component and stretch it backward, thereby achieving mechanical performance testing. This tensile failure test allows for the detection of the transformer insulation component's mechanical properties, thus simultaneously testing both its resistance and mechanical properties. Because the compression spring plate 603 of this device serves a positioning function, it does not affect the testing process. After the mechanical performance testing of the transformer insulation component is completed, the electric telescopic rod 801 retracts, and under the thrust of the second damping spring 1105, the movable vertical slot plate 1102 moves downward. This causes the aforementioned structure to reverse its operation, ensuring the unfolding effect of the moving clamp 1110. The electric slide rail 5 will push out the tested transformer insulation components, and the mechanical performance is judged by observing whether the transformer insulation components are damaged. The intelligent megohmmeter 4 can reflect whether the resistance performance of the transformer insulation components is qualified, thereby judging the overall insulation performance of the transformer insulation components. This device highlights the innovative structure and does not elaborate too much on existing mature technologies. Through the above structure, different transformers can be tested, including ordinary transformers, intelligent large transformers, and DC converter transformers.

[0030] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. A transformer insulation performance testing device, comprising a testing housing (1) and a support housing (2) fixedly installed on the bottom surface of the testing housing (1), characterized in that: The right side of the front of the test box (1) is equipped with a protective door (3) for protection, and the upper side of the front of the protective door (3) is fixedly installed with an intelligent megohmmeter (4) for insulation resistance testing. The left and right sides of the lower side of the inner wall of the test box (1) are both fixedly installed with moving components (6) for moving insulating parts through fixed electric slide rails (5). The left and right sides of the rear side of the inner wall of the test box (1) are provided with pushing components (7) for extrusion testing, and the top surfaces of the two pushing components (7) are connected to the intelligent megohmmeter (4) through the protective door (3) via connecting lines (9). The lower side of the rear side of the inner wall of the test box (1) is provided with a stretching component (8) for pushing and stretching between the two pushing components (7).

2. The transformer insulation performance testing device according to claim 1, characterized in that: The moving component (6) includes a moving plate (601) that is fixedly installed on both sides of the electric slide rail (5). A support plate (602) for support is fixedly installed on the top surface of the moving plate (601). A compression spring plate (603) for snap-fit ​​is fixedly installed on both the left and right sides of the top surface of the support plate (602). A first trapezoidal groove (604) for sliding is opened on both the left and right sides of the bottom surface of the moving plate (601). A first trapezoidal block (606) matching the first trapezoidal groove (604) is fixedly installed on the front side of the inner wall of the two first trapezoidal grooves (604) by a fixed first damping spring (605). An arc-head push block (607) for pushing is fixedly installed on the bottom surface of the two first trapezoidal blocks (606).

3. The transformer insulation performance testing device according to claim 2, characterized in that: The pushing assembly (7) includes a squeezing arc plate (701) rotatably mounted on the rear side of the inner wall of the detection box (1), and the bottom surface of the squeezing arc plate (701) is fixedly mounted with a pulling bending plate (702) for pulling by a connector (10). The connector (10) includes two first connecting frames (1001), and the inner walls of the two first connecting frames (1001) are fixedly installed with a fixed extension rod (1003) via a sliding first connecting shaft (1002). The rod wall of the fixed extension rod (1003) is slidably installed with a fixed rod shell (1004) for connection. The bottom surface of the fixed rod shell (1004) is slidably installed with a second connecting frame (1006) for connection via a fixed second connecting shaft (1005). The fixed extension rod (1003) is located on the inner wall of the fixed rod shell (1004) and a limiting block (1007) for limiting is fixedly installed. The top surface of the limiting block (1007) is fixedly installed with a push spring (1008) for elastic pushing. The top surface of the extrusion arc plate (701) is fixedly connected to the rear side of the inner wall of the detection box (1) via a fixed tension spring (1009).

4. The transformer insulation performance testing device according to claim 3, characterized in that: The stretching assembly (8) includes an electric telescopic rod (801) fixedly installed on the rear side of the inner wall of the detection box (1), and a pushing arc block (802) for pushing is fixedly installed at the output end of the electric telescopic rod (801). A moving cavity (803) for moving is opened on the lower side of the inner wall of the detection box (1) below the pushing arc block (802). Two connecting ports (804) for connecting are opened on the upper side of the inner wall of the moving cavity (803) below the pushing arc block (802). A connecting block (805) for connecting is slidably installed on the inner wall of the two connecting ports (804). A moving horizontal plate (806) for moving is fixedly installed on the bottom surface of the two connecting blocks (805). A linkage block (807) for pushing is fixedly installed on the left and right sides in front of the moving horizontal plate (806). A pressing assembly (11) for pressing and clamping is provided on the top surface of the two linkage blocks (807).

5. The transformer insulation performance testing device according to claim 4, characterized in that: The extrusion assembly (11) includes an arc-shaped inclined block (1101) fixedly installed on the top surface of the linkage block (807), and the top surface of the arc-shaped inclined block (1101) is provided with a movable vertical groove plate (1102) for vertical movement. The inner wall of the movable vertical groove plate (1102) contacts the arc surface of the arc-shaped inclined block (1101) through a rotating push wheel (1103). The interior of the detection box (1) is provided with a rotating cavity (1104) above the movable vertical groove plate (1102) for rotation. 2) The top surface is fixedly connected to the upper side of the inner wall of the rotating cavity (1104) by two second damping springs (1105), and a number of tooth blocks (1106) for meshing connection are fixedly installed on the surface of the movable vertical slot plate (1102) on one side of the inner wall of the rotating cavity (1104). A gear (1107) for transmission is meshed on the surface of a number of corresponding tooth blocks (1106), and a U-shaped connecting frame (1109) for movement is threadedly connected to the inner wall of the gear (1107) through a fixed threaded rod (1108). The U-shaped connecting frame (1109) has a movable clamping plate (1110) for movable clamping slidably installed on both the upper and lower sides near the movable component (6), and the front and rear sides of the movable clamping plate (1110) are equipped with guide multi-hole blocks (1112) for guidance through two rotating guide rods (1111).

6. The transformer insulation performance testing device according to claim 2, characterized in that: The front ends of the two extrusion plates (603) are both curved upwards, and the extrusion plates (603) and the support plate (602) are both made of PVC plastic. The rear of the protective door (3) is interlocked with the front of the inner wall of the detection box (1).

7. The transformer insulation performance testing device according to claim 3, characterized in that: Both of the extrusion arc plates (701) include a middle straight part (7011) and two warped parts (7012), and the two warped parts (7012) extend upward from the front and rear sides of the middle straight part (7011), respectively. The top surface of the front warped part (7012) is set with an arc head, and a conductive copper plate (7013) for conducting electricity is fixedly installed on the bottom surface of the middle straight part (7011). The surface of the conductive copper plate (7013) is fixedly connected to one end of the connecting wire (9). The two pull bending plates (702) are L-shaped rod structures, and the included angle of the opening side of the pull bending plate (702) is set at 135°.

8. The transformer insulation performance testing device according to claim 4, characterized in that: The top surfaces of the two corresponding first connecting frames (1001) are fixedly connected to the bottom surface of the extrusion arc plate (701), while the bottom surfaces of the two corresponding second connecting frames (1006) are fixedly connected to the top surface of the pull bending plate (702). The two pull bending plates (702) are located on one side of the arc head push block (607), and the inner walls of the two push springs (1008) are respectively sleeved with the rod walls of the corresponding fixed extension rods (1003).

9. The transformer insulation performance testing device according to claim 4, characterized in that: The upper front corner of the pushing arc block (802) is rounded and fits against the surface of the arc head push block (607). The surfaces of the two connecting blocks (805) are respectively tightly fitted against the inner wall of the corresponding connecting port (804).

10. A transformer insulation performance testing device according to claim 5, characterized in that: The top surfaces of the two movable vertical slot plates (1102) extend through the upper side of the inner wall of the corresponding movable cavity (803) to the interior of the rotating cavity (1104). The opposite ends of the two threaded rods (1108) are rotatably connected to one side of the inner wall of the corresponding rotating cavity (1104), and the opposite sides of the two threaded rods (1108) extend through the other side of the inner wall of the corresponding rotating cavity (1104) to the interior of the detection box (1). The multiple guide porous blocks (1112) are all plate structures and have two symmetrical bends on one side. Several guide porous blocks (1112) have through slots (12) for the passage of insulating parts on the side near the movable assembly (6). The through slots (12) are flared slots. The through slots (12) are located in the middle of the upper and lower inner walls of the guide porous blocks (1112). The setting height of the through slots (12) is one centimeter above the support plate (602). The two rotating cavities (1104) are provided with a second trapezoidal groove (13) on the side near the movable vertical groove plate (1102), and the inner wall of the second trapezoidal groove (13) is fixedly connected to the surface of the movable vertical groove plate (1102) through a sliding second trapezoidal block (14). The rod walls of the two threaded rods (1108) are fixedly installed with a limiting ring block (15) for limiting on one side of the rotating cavity (1104), and the surface of the limiting ring block (15) is rotatably connected to the inner wall of the rotating cavity (1104). The two corresponding movable clamping plates (1110) are fixedly installed with rubber pads (16) for protection on opposite sides.

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