A partial discharge-free test device for intelligent ring main unit detection

Abstract

The present invention relates to the field of ring network cabinet detection technology, and specifically to a no partial discharge test device for intelligent ring network cabinet detection. The present invention includes a transfer platform, one end of the transfer platform is fixedly connected to a side-opening storage box, the interior of the side-opening storage box is fixedly connected to a power supply, and the output end of the power supply is fixedly connected to a no partial discharge high-voltage generator via a cable. The present invention realizes no partial discharge test detection of multiple ring network cabinets at the same time by setting a voltage divider in conjunction with three high-voltage output cables, and by setting a storage mechanism to pull and position the high-voltage output cable and the partial discharge signal cable, realizes automatic sorting and storage of the high-voltage output cable and the partial discharge signal cable, and uses a monitoring mechanism to monitor the extension length to ensure that the relative length difference between the high-voltage output cable and the partial discharge signal cable is less than 0.5 meters, thereby improving the test detection accuracy, thereby effectively reducing the wiring difficulty and improving the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of ring main unit detection, and in particular to a partial discharge-free test device for detecting an intelligent ring main unit. Background Art

[0002] Ring main units (RMUs) are critical equipment in medium-voltage distribution networks, used to power high-load areas such as residential communities and shopping malls. Due to power supply capacity, redundancy, and expansion requirements, multiple RMUs are often installed in the same location. Traditional testing requires wiring each RMU, which is inefficient and carries high risks associated with high-altitude operations. Running multiple RMUs in parallel is also susceptible to electromagnetic interference. The intelligent, non-partial discharge (PD) test device utilizes multi-channel simultaneous testing, a liftable platform, and anti-interference algorithms to achieve efficient and accurate testing across multiple RMUs, improving operational safety and reliability.

[0003] Existing non-partial discharge test devices, for example, a vehicle-mounted non-partial discharge AC withstand voltage test vehicle proposed in patent application number "CN207799006U", includes a box-type transfer platform with an openable roof and a non-partial discharge AC withstand voltage test device. A base is fixed in the compartment of the box-type transfer platform, and the non-partial discharge AC withstand voltage test device is hinged on the base. The non-partial discharge AC withstand voltage test device is movably arranged on the box-type transfer platform through a hydraulic control system and a hydraulic support rod, and a test system is provided in the compartment of the box-type transfer platform.

[0004] However, in actual application, the above patented technology still reveals some significant deficiencies. When a withstand voltage test is required, the non-partial discharge withstand voltage test equipment is driven to rotate to a vertical state so that the connection terminals of the non-partial discharge withstand voltage test equipment protrude from the top of the cargo box of the box-type transfer platform, thereby facilitating wiring and conducting a withstand voltage test. When dealing with multiple ring network cabinets installed at the same location, since the height of the non-partial discharge withstand voltage test equipment after protruding from the top of the box-type transfer platform is relatively high, it is necessary to remove the connecting wires after inspecting one ring network cabinet, sort them out, and then connect the connecting wires to the next ring network cabinet, which increases the difficulty of wiring and reduces the efficiency of the non-partial discharge test. Summary of the Invention

[0005] The purpose of the present invention is to provide a partial discharge-free test device for detecting an intelligent ring main unit, so as to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A partial discharge-free test device for detecting an intelligent ring network cabinet preferably includes a transfer table, one end of the transfer table is fixedly connected to a side-opening storage box, the interior of the side-opening storage box is fixedly connected to an energy supply, the output end of the energy supply is fixedly connected to a partial discharge-free high-voltage generator via a cable, the output end of the partial discharge-free high-voltage generator is fixedly connected to a voltage divider, the output end of the voltage divider is evenly fixedly connected to three high-voltage output cables, the interior of the side-opening storage box is fixedly connected to a measuring instrument, the input end of the measuring instrument is evenly fixedly connected to three coupling capacitors via cables, and the input end of the coupling capacitor is fixedly connected to a partial discharge signal cable;

[0008] The side-opening storage box is internally installed with a storage mechanism for adjusting the extension length of the high-voltage output cable and the partial discharge signal cable, and the side-opening storage box is internally installed with a monitoring mechanism for monitoring the extension length of the high-voltage output cable and the partial discharge signal cable.

[0009] Preferably, the storage mechanism includes a positioning rod fixedly connected to the inside of the side-opening storage box, one end of the positioning rod is rotatably connected to six guide wheels, six pairs of guide slides are fixedly connected to the inner bottom of the side-opening storage box, one end of two adjacent guide slides is slidably connected to an adjusting slider, the top of the adjusting slider is rotatably connected to a movable pulley, and one end of the high-voltage output cable and the partial discharge signal cable are successively passed around the corresponding guide wheels and movable pulleys, a positioning component for fixing the adjusting slider along the length direction of the guide slide is installed inside the side-opening storage box, and an unlocking component for releasing the positioning of the adjusting slider is installed inside the side-opening storage box, and a reset component for driving the adjusting slider to move along the length direction of the guide slide is installed inside the side-opening storage box.

[0010] Preferably, the positioning assembly includes six positioning rails fixedly connected to the bottom of the side-opening storage box, a positioning slider is slidably inserted into the inner top of the positioning rail, a plurality of positioning springs are evenly fixedly connected to the bottom of the positioning slider, the positioning springs are installed inside the positioning rail, a plurality of positioning slots are evenly opened on the top of the positioning slider, and an arc-shaped card block adapted to the positioning slot is fixedly connected to the bottom of the adjusting slider.

[0011] Preferably, the unlocking assembly includes an unlocking slide groove symmetrically opened at one end of the positioning slide rail, a pair of inclined slide grooves symmetrically opened at one end of the positioning slide block, an unlocking slide rod is slidably connected to the inside of the unlocking slide groove, one end of the unlocking slide rod is fixedly connected to a pair of unlocking slide blocks, one end of the unlocking slide block is inserted inside the inclined slide groove, one end of the two unlocking slide rods is hinged with a U-shaped card rod, the inner bottom of the side-opening storage box is fixedly connected with a positioning plate, and one end of the positioning plate is fixedly connected with an L-shaped card plate adapted to the U-shaped card rod.

[0012] Preferably, the reset assembly includes six pairs of inverted T-shaped reset slide bars fixedly connected to the top of the side-opening storage box, one end of two adjacent inverted T-shaped reset slide bars is slidably connected to a reset slider, the bottom of the reset slider is fixedly connected to a traction rope, one end of the traction rope is fixedly connected to the adjustment slider, one end of the inverted T-shaped reset slide bar is provided with a reset spring, and the reset spring is installed between the reset slider and the inverted T-shaped reset slide bar.

[0013] Preferably, six U-shaped seats are fixedly connected to the inner bottom of the side-opening storage box, and the top of the U-shaped seat is rotatably connected to a guide roller. The guide roller is installed below the inverted T-shaped reset slide bar, and the middle section of the traction rope passes around the bottom of the guide roller.

[0014] Preferably, the monitoring mechanism includes a transmission wheel fixedly connected to the hinged end of the movable pulley, one end of the transmission wheel is fixedly connected to a radial magnet, one end of the adjusting slider is fixedly connected to a Hall sensor adapted to the radial magnet, a transmission component for driving the transmission wheel to rotate is installed inside the side-opening storage box, and an alarm component for prompting abnormal lengths of the high-voltage output cable and the partial discharge signal cable is installed at one end of the side-opening storage box.

[0015] Preferably, the transmission assembly includes a transmission gear ring fixedly sleeved on the periphery of the transmission wheel, and six transmission racks are fixedly connected to the inner bottom of the side-opening storage box, and the transmission gear ring is engaged with the transmission racks.

[0016] Preferably, the alarm component includes six cable management display screens fixedly connected to the outside of the side-opening storage box, one end of the cable management display screen is integrated with a multi-color indicator light, and the top of the side-opening storage box is fixedly connected with a controller, and the controller is electrically connected to the cable management display screen and the multi-color indicator light.

[0017] Preferably, an infrared thermal imager is fixedly connected to the inner top of the side-opening storage box, and an adjustable air conditioner is fixedly connected to one end of the transfer platform. The cooling end of the adjustable air conditioner extends to the interior of the side-opening storage box through a pipe, and the controller is electrically connected to the infrared thermal imager and the adjustable air conditioner.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention first realizes the simultaneous partial discharge test detection of multiple ring network cabinets by setting a voltage divider and cooperating with three high-voltage output cables, and realizes the automatic sorting and storage of the high-voltage output cables and partial discharge signal cables by setting a storage mechanism to pull and position the high-voltage output cables and partial discharge signal cables. At the same time, the extension length is monitored by the monitoring mechanism to ensure that the relative length difference between the high-voltage output cables and the partial discharge signal cables is less than 0.5 meters, thereby improving the test detection accuracy, thereby effectively reducing the wiring difficulty and improving the detection efficiency.

[0020] 2. When manually pulling the high-voltage output cable or the partial discharge signal cable to connect with the ring network cabinet, the present invention facilitates the stepless positioning and rapid and regular storage of the high-voltage output cable and the partial discharge signal cable by setting the positioning component and the unlocking component and the reset component, thereby further improving the efficiency of the device's non-partial discharge test detection.

[0021] 3. When the high-voltage output cable or the partial discharge signal cable is manually pulled outward, the present invention facilitates the conversion of the movement of the movable pulley along the length direction of the guide slide bar into rotational movement by setting the coordinated use of the transmission assembly and the alarm assembly. The measuring instrument determines the extension length of the high-voltage output cable and the partial discharge signal cable by the number of rotations of the movable pulley. At the same time, when the extension length difference is greater than 0.5 meter, the measuring instrument controls the multi-color indicator light to light up red to prompt adjustment. When the extension length difference is less than 0.5 meter, the background noise level is reduced from 50 mVpp to 20 mVpp, thereby improving the accuracy and reliability of the non-partial discharge test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the side-opening storage box of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the high-voltage output cable and the partial discharge signal cable in the present invention;

[0026] Figure 4 This is a schematic diagram of the connection relationship between the reset component and the adjustment slider in the present invention;

[0027] Figure 5 This is a schematic diagram of the installation relationship between the positioning slide rail and the adjustment slider in the present invention;

[0028] Figure 6 This is an exploded view of the internal structure of the positioning slide rail of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the reset component in the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the transmission assembly in the present invention;

[0031] The accompanying drawings are numeraled as follows: 1. transfer table; 2. side-opening storage box; 3. power supply; 4. high-voltage generator without partial discharge; 5. voltage divider; 6. high-voltage output cable; 7. measuring instrument; 8. coupling capacitor; 9. partial discharge signal cable; 10. positioning rod; 11. guide wheel; 12. guide slide; 13. adjustment slide; 14. movable pulley; 15. positioning rail; 16. positioning slide; 17. positioning spring; 18. positioning slot; 20. arc-shaped block; 21. unlocking slide; 22. inclined slide. 23. Unlocking slide bar; 24. Unlocking slider; 25. U-shaped clamping bar; 26. Positioning plate; 27. L-shaped clamping plate; 28. Inverted T-shaped reset slide bar; 29. Reset slider; 30. Pull rope; 31. Reset spring; 32. U-shaped seat; 33. Guide roller; 34. Drive wheel; 35. Radial magnet; 36. Hall sensor; 37. Drive gear ring; 38. Drive rack; 39. Cable management display; 40. Multi-color indicator light; 41. Infrared thermal imager; 42. Air conditioning adjustment; 43. Controller. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] A non-partial discharge test device for intelligent ring network cabinet detection, wherein a storage mechanism and a monitoring mechanism are used to realize the arrangement and storage of high-voltage output cables 6 and partial discharge signal cables 9, and a voltage divider 5 is used to detect multiple ring network cabinets at the same time. Figure 1-Figure 3 As shown, three high-voltage output cables 6 are used to input high voltage to the ring main unit, and then the voltage output by the ring main unit is guided to the coupling capacitor 8 and the measuring instrument 7 through the partial discharge signal cable 9 for detection. It is a type of electrical variable detection device.

[0034] like Figures 1-4 As shown, it includes a transfer table 1, one end of the transfer table 1 is fixedly connected to a side-opening storage box 2, the inside of the side-opening storage box 2 is fixedly connected to an energy supply 3, the output end of the energy supply 3 is fixedly connected to a high-voltage generator 4 with or without partial discharge through a cable, the output end of the high-voltage generator 4 with or without partial discharge is fixedly connected to a voltage divider 5, the output end of the voltage divider 5 is evenly fixedly connected to three high-voltage output cables 6, the inside of the side-opening storage box 2 is fixedly connected to a measuring instrument 7, the input end of the measuring instrument 7 is evenly fixedly connected to three coupling capacitors 8 through cables, the input end of the coupling capacitor 8 is fixedly connected to a partial discharge signal cable 9, and the top of the side-opening storage box 2 is fixedly connected to a controller 43;

[0035] The side-opening storage box 2 is internally installed with a storage mechanism for adjusting the extension length of the high-voltage output cable 6 and the partial discharge signal cable 9, and the side-opening storage box 2 is internally installed with a monitoring mechanism for monitoring the extension length of the high-voltage output cable 6 and the partial discharge signal cable 9.

[0036] When in use, first push the transfer platform 1 to move to the vicinity of the intelligent ring network cabinet that needs to be tested on site, then open the side of the side-opening storage box 2, manually pull the three high-voltage output cables 6 to a suitable length, and connect them to the input ends of the three intelligent ring network cabinets respectively, then manually pull the three partial discharge signal cables 9 to connect them to the output ends of the three intelligent ring network cabinets respectively, and at the same time set the storage mechanism to form a traction positioning for one end of the high-voltage output cable 6 and the partial discharge signal cable 9 when the high-voltage output cable 6 and the partial discharge signal cable 9 extend out of the side-opening storage box 2, so that the high-voltage output cable 6 and the partial discharge signal cable 9 are regularly arranged in the side-opening storage box 2 The interior of the circuit is designed to reduce the mutual interference between the high-voltage output cable 6 and the partial discharge signal cable 9; at the same time, a monitoring mechanism is set to monitor the extended lengths of the high-voltage output cable 6 and the partial discharge signal cable 9 to ensure that the three high-voltage output cables 6 and the partial discharge signal cable 9 are accurately aligned with the input and output ports of the intelligent ring network cabinet. The extended length difference is less than 0.5 meters. Then, the voltage divider 5 is used to input the high voltage input from the non-partial discharge high-voltage generator 4 to the ring network cabinet through the three high-voltage output cables 6. The non-partial discharge high-voltage generator 4 adopts the FRC-60kV / 1000pF series, and the voltage divider 5 adopts the Haefely The HTS series high-voltage divider, after the high-voltage current passes through the internal circuit of the ring main unit, directs the output voltage of the ring main unit via the partial discharge signal cable 9 to the coupling capacitor 8 and the measuring instrument 7 for detection. The measuring instrument 7 adopts the SMS300 intelligent distribution network automation measuring instrument, and the coupling capacitor 8 adopts the CC-1000 series. This facilitates the automatic storage and arrangement of the high-voltage output cable 6 and the partial discharge signal cable 9, and simultaneously completes the partial discharge detection test for multiple intelligent ring main units, reducing the wiring efficiency of the device and improving the detection efficiency of the partial discharge test.

[0037] like Figure 2-Figure 7As shown, the storage mechanism includes a positioning rod 10 fixedly connected to the inside of the side-opening storage box 2, one end of the positioning rod 10 is rotatably connected to six guide wheels 11, and six pairs of guide slides 12 are fixedly connected to the inner bottom of the side-opening storage box 2. One end of two adjacent guide slides 12 is slidably connected to an adjusting slider 13, and the top of the adjusting slider 13 is rotatably connected to a movable pulley 14. One end of the high-voltage output cable 6 and the partial discharge signal cable 9 are successively passed around the corresponding guide wheels 11 and movable pulleys 14. A positioning component for fixing the adjusting slider 13 along the length direction of the guide slide 12 is installed inside the side-opening storage box 2, and an unlocking component for releasing the positioning of the adjusting slider 13 is installed inside the side-opening storage box 2. A reset component for driving the adjusting slider 13 to move along the length direction of the guide slide 12 is installed inside the side-opening storage box 2;

[0038] Among them, the positioning assembly includes six positioning rails 15 fixedly connected to the bottom of the side-opening storage box 2, a positioning slider 16 is slidably inserted into the inner top of the positioning rail 15, a plurality of positioning springs 17 are evenly fixedly connected to the bottom of the positioning slider 16, the positioning springs 17 are installed inside the positioning rail 15, a plurality of positioning slots 18 are evenly opened on the top of the positioning slider 16, and an arc-shaped card block 20 adapted to the positioning slot 18 is fixedly connected to the bottom of the adjustment slider 13;

[0039] Moreover, the unlocking assembly includes an unlocking slide 21 symmetrically provided at one end of the positioning slide rail 15, a pair of oblique slides 22 symmetrically provided at one end of the positioning slider 16, an unlocking slide rod 23 slidably connected inside the unlocking slide 21, one end of the unlocking slide rod 23 is fixedly connected to a pair of unlocking sliders 24, one end of the unlocking slider 24 is inserted into the interior of the oblique slide 22, one end of the two unlocking slide rods 23 is hinged to a U-shaped card rod 25, the inner bottom of the side-opening storage box 2 is fixedly connected to a positioning plate 26, and one end of the positioning plate 26 is fixedly connected to an L-shaped card plate 27 adapted to the U-shaped card rod 25;

[0040] Moreover, the reset assembly includes six pairs of inverted T-shaped reset slide bars 28 fixedly connected to the top of the side-opening storage box 2, one end of two adjacent inverted T-shaped reset slide bars 28 is slidably connected to a reset slider 29, the bottom of the reset slider 29 is fixedly connected to a traction rope 30, one end of the traction rope 30 is fixedly connected to the adjustment slider 13, one end of the inverted T-shaped reset slide bar 28 is sleeved with a reset spring 31, and the reset spring 31 is installed between the reset slider 29 and the inverted T-shaped reset slide bar 28;

[0041] In addition, six U-shaped seats 32 are fixedly connected to the inner bottom of the side-opening storage box 2, and the top of the U-shaped seat 32 is rotatably connected to a guide roller 33. The guide roller 33 is installed below the inverted T-shaped reset slide bar 28, and the middle section of the traction rope 30 passes around the bottom of the guide roller 33.

[0042] When in use, first, when one end of the high-voltage output cable 6 or the partial discharge signal cable 9 is manually pulled and connected to the input end or the output end of the intelligent ring network cabinet, the middle section of the high-voltage output cable 6 or the partial discharge signal cable 9 is made to bypass the guide wheel 11 and the movable pulley 14, and with the guide wheel 11 as the fulcrum, the movable pulley 14 is pulled to drive the adjusting slider 13 to move along the length direction of the guide slide bar 12, and at the same time, the adjusting slider 13 pulls one end of the traction rope 30 to bypass the guide roller 33, and pulls the reset slider 29 to move downward along the length direction of the inverted T-shaped reset slide bar 28, and at the same time, the reset slider 29 squeezes the reset spring 31 to produce a contraction deformation;

[0043] At the same time, the middle section of the partial discharge signal cable 9 or the high-voltage output cable 6 pulls the movable pulley 14 to push the adjusting slider 13 to drive the arc-shaped card block 20 to move along the length direction of the positioning slider 16, and squeezes the positioning slider 16 to slide toward the inside of the positioning slide rail 15, and squeezes the positioning spring 17 to produce a contraction deformation. Then, after one end of the high-voltage output cable 6 or the partial discharge signal cable 9 extends to a suitable length, the rebound characteristic of the positioning spring 17 is used to make the positioning spring 17 rebound and eject the positioning slider 16, and push the positioning slider 16 to drive the positioning slot 18 and the arc-shaped card block 2 0 is engaged, so that one end of the arc-shaped card block 20 is embedded in the interior of the positioning card slot 18. At this time, the traction of the high-voltage output cable 6 or the partial discharge signal cable 9 is released, and the rebound characteristic of the reset spring 31 is used to push the reset slider 29 to slide upward along the length direction of the inverted T-shaped reset slide bar 28, and drive one end of the traction rope 30 to pass around the guide roller 33, and pull the adjustment slider 13, so that the adjustment slider 13 drives the arc-shaped card block 20 to come into contact with the inner wall of the positioning card slot 18, thereby facilitating the fixation of the extended length of the high-voltage output cable 6 or the partial discharge signal cable 9;

[0044] Then, when it is necessary to release the fixation of the extended length of the high-voltage output cable 6 and the partial discharge signal cable 9, the U-shaped card rod 25 is manually pulled to drive the unlocking slide bar 23 to slide along the length direction of the unlocking slide groove 21, and drive the unlocking slider 24 to form a conflict with the inner wall of the inclined slide groove 22, and at the same time push the positioning slider 16 to slide toward the inside of the positioning slide rail 15, and at the same time make the positioning slider 16 squeeze the positioning spring 17 to produce a contraction deformation, at this time make the positioning slider 16 drive the positioning slot 18 to disengage from the engagement with the arc-shaped card block 20 along the length direction of the positioning spring 17, and at the same time manually pull the U-shaped card rod 25 and the L-shaped card plate 27 to form a fixed hook;

[0045] Then the reset spring 31 is relieved of the force and produces a rebound deformation, and the reset slider 29 is pushed upward along the length direction of the inverted T-shaped reset slide bar 28, and at the same time, the reset slider 29 pulls one end of the U-shaped seat 32 to bypass the guide roller 33, and drives the adjusting slider 13 to move along the length direction of the guide slide bar 12, and at the same time, the adjusting slider 13 drives the movable pulley 14 to form a rolling conflict with the high-voltage output cable 6 or the partial discharge signal cable 9, and pushes the rear high-voltage output cable 6 or the partial discharge signal cable 9 to move to the inside of the side-opening storage box 2 for storage, so as to facilitate the stepless positioning and rapid and regular storage of the high-voltage output cable 6 and the partial discharge signal cable 9, further improving the efficiency of the device's non-partial discharge test.

[0046] like Figure 2-Figure 5 、 Figure 8 As shown, the monitoring mechanism includes a transmission wheel 34 fixedly connected to the hinged end of the movable pulley 14, one end of the transmission wheel 34 is fixedly connected to a radial magnet 35, one end of the adjusting slider 13 is fixedly connected to a Hall sensor 36 adapted to the radial magnet 35, and a transmission component for driving the transmission wheel 34 to rotate is installed inside the side-opening storage box 2, and an alarm component for prompting abnormal lengths of the high-voltage output cable 6 and the partial discharge signal cable 9 is installed at one end of the side-opening storage box 2;

[0047] The transmission assembly includes a transmission gear ring 37 fixedly mounted on the periphery of the transmission wheel 34, and six transmission racks 38 are fixedly connected to the inner bottom of the side-opening storage box 2, and the transmission gear ring 37 is meshed with the transmission racks 38;

[0048] In addition, the alarm component includes six cable management display screens 39 fixedly connected to the outside of the side-opening storage box 2, one end of the cable management display screen 39 is integrated with a multi-color indicator light 40, and the top of the side-opening storage box 2 is fixedly connected with a controller 43, and the controller 43 is electrically connected to the cable management display screen 39 and the multi-color indicator light 40.

[0049] During use, when the high-voltage output cable 6 or the partial discharge signal cable 9 is manually pulled to extend outward along the length direction of the guide slide 12, the high-voltage output cable 6 or the partial discharge signal cable 9 pushes the movable pulley 14 to drive the adjusting slider 13 to move along the length direction of the guide slide 12, and the movable pulley 14 drives the transmission wheel 34 to move along the length direction of the guide slide 12, and at the same time, the transmission wheel 34 drives the transmission gear ring 37 to engage with the transmission rack 38 and move along the length direction of the transmission rack 38, and at the same time, the transmission gear ring 37 drives the transmission wheel 34 to rotate, and the transmission wheel 34 drives the radial magnet 35 to rotate axially with the hinge end of the movable pulley 14 as the center of the circle, and when the transmission wheel 34 drives the movable pulley 14 to rotate one circle, the transmission wheel 34 drives the radial magnet 35 to pass through the detection end of the Hall sensor 36 once, where the Hall sensor 36 adopts SS441A series, and at the same time, the Hall sensor 36 transmits the monitoring data to the controller 43, and the controller 43 calculates the extension length of the high-voltage output cable 6 or the partial discharge signal cable 9 according to the number of rotations of the movable pulley 14 collected by the Hall sensor 36. At the same time, the extension lengths of the three high-voltage output cables 6 and the three partial discharge signal cables 9 are digitally displayed through the six cable management display screens 39, and when the extension length difference of a high-voltage output cable 6 or the partial discharge signal cable 9 is greater than 0.5 meters, the controller 43 controls the multi-color indicator light 40 to light up red to prompt the staff to make adjustments, so as to facilitate the adjustment of the extension length difference between the three high-voltage output cables 6 and the three partial discharge signal cables 9 to less than 0.5 meters, so that the background noise level is reduced from 50mVpp to 20mVpp, thereby improving the accuracy and reliability of the non-partial discharge test device.

[0050] like Figure 1 and Figure 2 As shown, an infrared thermal imager 41 is fixedly connected to the inner top of the side-opening storage box 2, and an adjustable air conditioner 42 is fixedly connected to one end of the transfer platform 1. The cooling end of the adjustable air conditioner 42 extends to the interior of the side-opening storage box 2 through a pipe, and the controller 43 is electrically connected to the infrared thermal imager 41 and the adjustable air conditioner 42.

[0051] During use, the infrared thermal imager 41 is first set to scan the temperature distribution inside the side-opening storage box 2 in real time to ensure that the equipment operates in a safe temperature zone. The infrared thermal imager 41 adopts the Fluke TiX1060 series. When the operating temperature of the power supply 3 or the non-partial discharge high-voltage generator 4, the voltage divider 5, the measuring instrument 7, and the coupling capacitor 8 inside the side-opening storage box 2 is too high, the controller 43 controls and adjusts the air conditioner 42 to cooperate with the pipeline to cool down the key components inside the side-opening storage box 2 to prevent performance degradation caused by overheating, thereby further improving the non-partial discharge test detection efficiency of the device.

[0052] The working principle of the non-partial discharge test device for intelligent ring main unit detection provided by the present invention is as follows:

[0053] First, after pushing the transfer platform 1 to the vicinity of the intelligent ring network cabinet that needs to be tested on site, open the side of the side-opening storage box 2, and manually pull the three high-voltage output cables 6 to an appropriate length and connect them to the input ends of the three intelligent ring network cabinets respectively. Then, manually pull the three partial discharge signal cables 9 to connect them to the output ends of the three intelligent ring network cabinets respectively, and at the same time, make the middle section of the high-voltage output cable 6 or the partial discharge signal cable 9 pass around the guide wheel 11 and the movable pulley 14, and use the guide wheel 11 as a fulcrum to pull the movable pulley 14 to drive the adjusting slider 13 to move along the length direction of the guide slide bar 12, and at the same time make the adjusting slider 13 pull one end of the traction rope 30 to pass around the guide roller 33, and pull the reset slider 29 to move downward along the length direction of the inverted T-shaped reset slide bar 28, and at the same time make the reset slider 29 squeeze the reset spring 31 to produce contraction deformation;

[0054] Then, the middle section of the partial discharge signal cable 9 or the high-voltage output cable 6 pulls the movable pulley 14 to push the adjusting slider 13 to drive the arc-shaped card block 20 to move along the length direction of the positioning slider 16, and squeezes the positioning slider 16 to slide toward the inside of the positioning slide rail 15, and squeezes the positioning spring 17 to produce a contraction deformation. Then, after one end of the high-voltage output cable 6 or the partial discharge signal cable 9 extends to a suitable length, the rebound characteristic of the positioning spring 17 is used to make the positioning spring 17 rebound and push out the positioning slider 16, and push the positioning slider 16 to drive the positioning slot 18 and the arc-shaped card block 20 to form a contraction deformation. The arc-shaped card block 20 is meshed, so that one end of the arc-shaped card block 20 is embedded in the interior of the positioning card slot 18. At this time, the traction of the high-voltage output cable 6 or the partial discharge signal cable 9 is released, and the rebound characteristic of the reset spring 31 is used to push the reset slider 29 to slide upward along the length direction of the inverted T-shaped reset slide bar 28, and drive one end of the traction rope 30 to pass around the guide roller 33, and pull the adjustment slider 13, so that the adjustment slider 13 drives the arc-shaped card block 20 to come into contact with the inner wall of the positioning card slot 18, so that the high-voltage output cable 6 and the partial discharge signal cable 9 are regularly arranged inside the side-opening storage box 2;

[0055] At the same time, the high-voltage output cable 6 or the partial discharge signal cable 9 pushes the movable pulley 14 to drive the adjusting slider 13 to move along the length direction of the guide slide 12, and the movable pulley 14 drives the transmission wheel 34 to move along the length direction of the guide slide 12, and at the same time, the transmission wheel 34 drives the transmission gear ring 37 to engage with the transmission rack 38 and move along the length direction of the transmission rack 38, and at the same time, the transmission gear ring 37 drives the transmission wheel 34 to rotate, and the transmission wheel 34 drives the radial magnet 35 to rotate axially with the hinge end of the movable pulley 14 as the center of the circle, and when the transmission wheel 34 drives the movable pulley 14 to rotate one circle, the transmission wheel 34 drives the radial magnet 35 to pass through the detection end of the Hall sensor 36 once, and at the same time The Hall sensor 36 transmits the monitoring data to the controller 43, and the controller 43 calculates the extension length of the high-voltage output cable 6 or the partial discharge signal cable 9 according to the number of rotations of the movable pulley 14 collected by the Hall sensor 36. At the same time, the extension lengths of the three high-voltage output cables 6 and the three partial discharge signal cables 9 are digitally displayed through the six cable management display screens 39. When the extension length difference of a high-voltage output cable 6 or a partial discharge signal cable 9 is greater than 0.5 meters, the controller 43 controls the multi-color indicator light 40 to light up red to prompt the staff to make adjustments, so as to adjust the extension length difference between the three high-voltage output cables 6 and the three partial discharge signal cables 9 to less than 0.5 meters, so that the background noise level is reduced from 50 mVpp to 20 mVpp. Then, the three high-voltage output cables 6 are used to input high voltage to the ring network cabinet. After the high-voltage current passes through the internal circuit of the ring network cabinet, the voltage output by the ring network cabinet is guided to the coupling capacitor 8 and the measuring instrument 7 through the partial discharge signal cable 9 for detection.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A non-partial discharge test device for detecting an intelligent ring main unit, comprising a transfer table (1), characterized in that: One end of the transfer platform (1) is fixedly connected to a side-opening storage box (2), the interior of the side-opening storage box (2) is fixedly connected to an energy supply (3), the output end of the energy supply (3) is fixedly connected to a high-voltage generator (4) with or without partial discharge via a cable, the output end of the high-voltage generator (4) with or without partial discharge is fixedly connected to a voltage divider (5), the output end of the voltage divider (5) is evenly fixedly connected to three high-voltage output cables (6), the interior of the side-opening storage box (2) is fixedly connected to a measuring instrument (7), the input end of the measuring instrument (7) is evenly fixedly connected to three coupling capacitors (8) via cables, and the input end of the coupling capacitor (8) is fixedly connected to a partial discharge signal cable (9); The side-opening storage box (2) is internally installed with a storage mechanism for adjusting the extension length of the high-voltage output cable (6) and the partial discharge signal cable (9), and the side-opening storage box (2) is internally installed with a monitoring mechanism for monitoring the extension length of the high-voltage output cable (6) and the partial discharge signal cable (9); The storage mechanism includes a positioning rod (10) fixedly connected to the inside of the side-opening storage box (2), one end of the positioning rod (10) is rotatably connected to six guide wheels (11), the inner bottom of the side-opening storage box (2) is fixedly connected to six pairs of guide slides (12), one end of two adjacent guide slides (12) is slidably connected to an adjustment slider (13), the top of the adjustment slider (13) is rotatably connected to a movable pulley (14), and one end of the high-voltage output cable (6) and the partial discharge signal cable (9) are sequentially passed around the corresponding guide wheels (11) and movable pulleys (14); A positioning assembly for fixing the adjusting slider (13) along the length direction of the guide slide bar (12) is installed inside the side-opening storage box (2), an unlocking assembly for releasing the positioning of the adjusting slider (13) is installed inside the side-opening storage box (2), and a reset assembly for driving the adjusting slider (13) to move along the length direction of the guide slide bar (12) is installed inside the side-opening storage box (2); The positioning assembly includes six positioning rails (15) fixedly connected to the bottom of the side-opening storage box (2), a positioning slider (16) is slidably inserted into the inner top of the positioning rail (15), a plurality of positioning springs (17) are evenly fixedly connected to the bottom of the positioning slider (16), the positioning springs (17) are installed inside the positioning rail (15), a plurality of positioning slots (18) are evenly opened on the top of the positioning slider (16), and an arc-shaped block (20) adapted to the positioning slot (18) is fixedly connected to the bottom of the adjusting slider (13); The unlocking assembly includes an unlocking slot (21) symmetrically opened at one end of the positioning slide rail (15), a pair of inclined slots (22) symmetrically opened at one end of the positioning slide block (16), an unlocking slide bar (23) slidably connected to the inside of the unlocking slot (21), one end of the unlocking slide bar (23) is fixedly connected to a pair of unlocking slide blocks (24), one end of the unlocking slide block (24) is inserted into the inside of the inclined slot (22), one end of the two unlocking slide bars (23) is hinged to a U-shaped clamping rod (25), the inner bottom of the side-opening storage box (2) is fixedly connected to a positioning plate (26), and one end of the positioning plate (26) is fixedly connected to an L-shaped clamping plate (27) adapted to the U-shaped clamping rod (25); The reset assembly includes six pairs of inverted T-shaped reset slide bars (28) fixedly connected to the top of the side-opening storage box (2), one end of two adjacent inverted T-shaped reset slide bars (28) is slidably connected to a reset slider (29), the bottom of the reset slider (29) is fixedly connected to a traction rope (30), one end of the traction rope (30) is fixedly connected to the adjustment slider (13), one end of the inverted T-shaped reset slide bar (28) is provided with a reset spring (31), and the reset spring (31) is installed between the reset slider (29) and the inverted T-shaped reset slide bar (28).

2. A non-partial discharge test device for detecting an intelligent ring main unit according to claim 1, characterized in that: The inner bottom of the side-opening storage box (2) is fixedly connected to six U-shaped seats (32), and the top of the U-shaped seat (32) is rotatably connected to a guide roller (33). The guide roller (33) is installed below the inverted T-shaped reset slide bar (28), and the middle section of the traction rope (30) passes around the bottom of the guide roller (33).

3. The non-partial discharge test device for detecting an intelligent ring main unit according to claim 2, characterized in that: The monitoring mechanism includes a transmission wheel (34) fixedly connected to the hinged end of the movable pulley (14), one end of the transmission wheel (34) is fixedly connected to a radial magnet (35), one end of the adjustment slider (13) is fixedly connected to a Hall sensor (36) adapted to the radial magnet (35), a transmission component for driving the transmission wheel (34) to rotate is installed inside the side-opening storage box (2), and an alarm component for prompting abnormal lengths of the high-voltage output cable (6) and the partial discharge signal cable (9) is installed at one end of the side-opening storage box (2).

4. The non-partial discharge test device for detecting an intelligent ring main unit according to claim 3 is characterized in that: The transmission assembly includes a transmission gear ring (37) fixedly mounted on the periphery of the transmission wheel (34); six transmission racks (38) are fixedly connected to the inner bottom of the side-opening storage box (2); and the transmission gear ring (37) is meshed with the transmission racks (38).

5. The non-partial discharge test device for detecting an intelligent ring main unit according to claim 3 is characterized in that: The alarm assembly comprises six cable management display screens (39) fixedly connected to the outside of the side-opening storage box (2), one end of the cable management display screens (39) is integrated with a multi-color indicator light (40), and the top of the side-opening storage box (2) is fixedly connected with a controller (43), and the controller (43) is electrically connected to the cable management display screens (39) and the multi-color indicator light (40).

6. The non-partial discharge test device for detecting an intelligent ring main unit according to claim 5, characterized in that: The inner top of the side-opening storage box (2) is fixedly connected to an infrared thermal imager (41), one end of the transfer platform (1) is fixedly connected to an adjustable air conditioner (42), the cooling end of the adjustable air conditioner (42) extends to the interior of the side-opening storage box (2) through a pipeline, and the controller (43) is electrically connected to the infrared thermal imager (41) and the adjustable air conditioner (42).

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