Device for testing dielectric strength of insulating oil

Abstract

The invention relates to the technical field of testing equipment, and particularly discloses an insulating oil dielectric strength testing device which comprises a dustproof detection box, one side of the dustproof detection box penetrates through and is fixedly connected with an observation window, the top of the dustproof detection box is fixedly connected with a dehydration device, and the bottom of the inner wall of the dustproof detection box is fixedly connected with a first supporting seat. The bottom of the testing oil cup is communicated with an oil outlet pipe, the bottom of the testing oil cup penetrates through and is rotationally connected with a cleaning device, the parts, located on the two sides of the testing oil cup, of the bottom of the inner wall of the dustproof detection box are fixedly connected with impurity removing devices, and the parts, located on the two sides of the testing oil cup, of the bottom of the inner wall of the dustproof detection box are fixedly connected with distance adjusting devices; the dielectric strength testing device for the insulating oil is provided with the dehydration device, so that the dielectric strength of the insulating oil is prevented from being reduced due to the existence of water, the accuracy of a test result is improved, and the impurity removal device is arranged, so that the test result is prevented from being influenced by impurities or generated foam in the insulating oil.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test equipment, in particular to an insulating oil dielectric strength testing device. BACKGROUND

[0002] In the grand blueprint of modern electric power industry, high-voltage electrical equipment such as transformers, circuit breakers, capacitors, etc. are like the "arteries" and "joints" of energy transmission, and their stable operation is related to the safety of the entire power grid. As the key medium filled in these devices, insulating oil plays an indispensable multiple role: it is not only an efficient insulating material, but also a powerful cooling medium, and also has the functions of arc extinguishing and protection of internal components. Therefore, the quality state of insulating oil directly determines the insulation performance and operating life of power equipment. In this context, insulating oil dielectric strength testing device emerges as the times require and has developed into one of the core instruments for oil testing and preventing equipment failure in the electric power industry. Insulating oil dielectric strength, also known as breakdown voltage, is the highest limit voltage value that measures the insulating oil's ability to withstand electric field strength without being broken down. It is the most core and most intuitive indicator of its insulation performance. If the oil product's dielectric strength decreases due to aging, moisture, or impurities, its insulation performance will deteriorate sharply, and it is easy to cause breakdown discharge under high-voltage electric field, leading to equipment short circuit, even explosion accidents, causing huge economic losses and social impact.

[0003] In the prior art, the presence of water in insulating oil may reduce the insulation performance of the insulating oil, resulting in a low test result. In addition, impurities or foam in the insulating oil may affect the test result. In the prior art, the electric field may be too concentrated, causing the insulating oil to be broken down, thereby greatly increasing the safety hazards of the device. SUMMARY

[0004] To achieve the above purpose, the present application is implemented by the following technical scheme: an insulating oil dielectric strength testing device, comprising a dustproof detection box, a viewing window is penetrated and fixedly connected on one side of the dustproof detection box, a dehydration device is fixedly connected on the top of the dustproof detection box, a first supporting seat is fixedly connected on the inner wall bottom of the dustproof detection box, a test oil cup is fixedly connected on the top of the first supporting seat, an oil outlet pipe is communicated at the bottom of the test oil cup, a first electromagnetic valve is sleeved and fixedly connected on the oil outlet pipe, an oil inlet pipe is communicated on the top of one side of the test oil cup, the oil inlet pipe penetrates through the top of the inner wall of the dustproof detection box and is fixedly connected with the dehydration device, a cleaning device is rotatably connected and penetrates through the bottom of the test oil cup, impurity removal devices are fixedly connected on the inner wall bottom of the dustproof detection box on both sides of the test oil cup, and distance adjusting devices are fixedly connected on the inner wall bottom of the dustproof detection box on both sides of the test oil cup.

[0005] Preferably, the dewatering device includes a second support seat, the top of which is fixedly connected with a water collecting tank, the top of which is fixedly connected with a dewatering tank, the water collecting tank is provided with two groups and symmetrically distributed at the bottom of the dewatering tank, the bottom of the dewatering tank is communicated with the water collecting tank, one side of the water collecting tank is fixedly connected with an oil collecting tank, the side of the water collecting tank away from the oil collecting tank is communicated with the water inlet of a high-pressure water pump, the water outlet of the high-pressure water pump is communicated with a water conveying pipe, a fixed block is sleeved and fixedly connected on the water conveying pipe, one side of the fixed block is fixedly connected with the dewatering tank, the top of the dewatering tank is penetrated and rotatably connected with a dewatering drum, the side and the bottom of the dewatering drum are both provided with dewatering holes, the dewatering drum is located above the oil collecting tank, both sides of the dewatering tank are fixedly connected with a first support, the top of the first support is fixedly connected with a first connecting plate, the top of the first connecting plate is fixedly connected with a first motor, the driving shaft of the first motor is penetrated through the first connecting plate and fixedly connected with a first connecting rod, the first connecting rod extends into the inside of the dewatering drum and is fixedly connected with the bottom of the inner wall of the dewatering drum, the bottom of the oil collecting tank is communicated with the oil inlet of an oil pump, the oil outlet of the oil pump is communicated with a connecting oil pipe, the second support seat is fixedly connected at the top of the dust detection box, and the bottom of the connecting oil pipe is communicated with the oil inlet pipe, thereby improving the dewatering efficiency, avoiding that part of the insulating oil is thrown out with water, reducing the waste of cost and improving the dewatering efficiency.

[0006] Preferably, the impurity removing device includes a second support, the top of which is fixedly connected with a second connecting plate, the top of which is fixedly connected with a second motor, the top of which is penetrated and rotatably connected with a threaded rod, the top of which is fixedly connected with the driving shaft of the second motor, the portions of the top of the second connecting plate located on both sides of the threaded rod are both penetrated and fixedly connected with sliding guide rods, a filter plate is sleeved and threadedly connected on the threaded rod, a plurality of oil filtering holes are uniformly formed in the top of the filter plate, the sliding guide rods penetrate through the top of the filter plate and are slidably connected with the filter plate, the bottom of the threaded rod is fixedly connected with a second connecting rod, a plurality of stirring plates are uniformly fixedly connected on the second connecting rod, the second support is fixedly connected with the inner wall bottom of the dust detection box, the second support is symmetrically arranged on both sides of the test oil cup, the stirring plates are located in the test oil cup, the influence of bubbles on the test result of the insulating oil is avoided, the test accuracy is improved, and the impurities and foam in the insulating oil can be collected by the up-down reciprocating movement of the filter plate, the influence of the impurities on the test result of the insulating oil is avoided, and the impurity removing effect is improved.

[0007] Preferably, the adjusting device includes a slide rail, an electric slider slidably connected to the inner wall of the slide rail, a third bracket fixedly connected to the top of the electric slider, a third connecting plate fixedly connected to the top of the third bracket, a fixed end of a pneumatic piston rod fixedly connected to the top of the third connecting plate, the movable end of the pneumatic piston rod passing through the third connecting plate and fixedly connected to an electrode, a fixed rod fixedly connected to one side of the third bracket, a fixed collar fixedly connected to the end of the fixed rod away from the third bracket, an annular oil-absorbing sponge fixedly connected to the inner wall of the fixed collar, the slide rail fixedly connected to the bottom of the inner wall of the dustproof testing box, the slide rail symmetrically distributed on both sides of the test oil cup, the size of the annular oil-absorbing sponge matching the size of the electrode to avoid excessive electric field concentration, improve the safety performance of the device, prevent insulating oil from adhering to the electrode, affecting the accuracy of subsequent tests, and improve testing efficiency.

[0008] Preferably, the cleaning device includes a rotating air pipe with jet pipes evenly connected to it. A second solenoid valve is sleeved and fixedly connected to the rotating air pipe. A driven gear is sleeved and fixedly connected to the portion of the rotating air pipe below the second solenoid valve. A driving gear meshes with the side of the driven gear. The drive shaft of a third motor is fixedly connected to the top of the driving gear. A connecting air pipe is connected to the bottom of the rotating air pipe, and the rotating air pipe and the connecting air pipe are rotatably connected. The end of the connecting air pipe away from the rotating air pipe is connected to the air outlet of a blower. A fourth connecting plate is sleeved and fixedly connected to the rotating air pipe above the second solenoid valve. A first cleaning sponge is fixedly connected to the bottom of the fourth connecting plate. A soap tank and a pure water tank are fixedly connected to the top of the rotating air pipe. A first connecting square pipe is connected to the bottom of the soap tank away from the rotating air pipe. The bottom of the pure water tank is connected to the portion away from the rotating air pipe. A portion of the air tube is connected to a second connecting square tube. A third solenoid valve is sleeved and fixedly connected to the first connecting square tube, and a fourth solenoid valve is sleeved and fixedly connected to the second connecting square tube. A first spray hole is evenly opened on one side of the first connecting square tube, and a second spray hole is evenly opened on one side of the second connecting square tube. A second cleaning sponge is fixedly connected to the portion of the side of the first spray hole located on the side of the first spray hole, and a third cleaning sponge is fixedly connected to the portion of the side of the second connecting square tube located on the side of the second spray hole. The bottom of the first connecting square tube is fixedly connected to a fourth connecting plate, and the bottom of the second connecting square tube is fixedly connected to the fourth connecting plate. The first and second connecting square tubes are symmetrically arranged on both sides of the rotating air tube. The rotating air tube passes through the bottom of the inner wall of the test oil cup and is rotatably connected to the test oil cup. The third motor is fixedly connected to the bottom of the test oil cup, and the blower is fixedly connected to the bottom of the test oil cup.

[0009] This invention provides a device for testing the dielectric strength of insulating oil. It has the following advantages: 1. The insulating oil dielectric strength test device, in use, before testing, the insulating oil needs to be pretreated, the first motor is started, the driving shaft of the first motor rotates to drive the first connecting rod to rotate, the first connecting rod drives the dehydration roller to rotate, then the insulating oil is poured into the dehydration roller, under the centrifugal rotation of the dehydration roller, the water with larger density is thrown to the outside, the oil with smaller density is gathered to the inside, so that the water is thrown from the dehydration hole in the inner wall of the dehydration roller to the dehydration tank, then falls into the water collecting tank, while the insulating oil falls from the dehydration hole at the bottom of the dehydration roller and falls into the oil collecting tank at the bottom, then the high-pressure water pump is started, the high-pressure water pump pumps the water in the water collecting tank out from the water inlet and transports it to the conveying water pipe from the water outlet, under the conveying of the conveying water pipe, the water is conveyed to the inside of the dehydration roller again for secondary dehydration, so that the dehydration efficiency is improved, the cost waste is reduced, and the dehydration efficiency is improved, when testing, the oil pump is started, the oil pump pumps the insulating oil without water in the oil collecting tank out from the oil inlet and transports it to the oil inlet pipe from the oil outlet, and finally transports it to the test oil cup for testing work.

[0010] 2. The insulating oil dielectric strength test device, in use, before testing, the bubbles and impurities in the insulating oil in the test oil cup need to be removed, the second motor is started, the driving shaft of the second motor rotates to drive the threaded rod to rotate, the threaded rod rotates to drive the filter plate to move up and down reciprocatingly under the limiting action of the sliding guide rod, while the threaded rod rotates to drive the second connecting rod to rotate, the second connecting rod drives the stirring plate to stir the insulating oil in the test oil cup, the impurities and bubbles in the insulating oil are filtered out from the insulating oil through the up and down reciprocating movement of the filter plate, the up and down turning facilitates the impurities to fall on the bottom of the filter plate through the oil filtering hole, while the stirring plate stirs the insulating oil, the bubbles in the insulating oil are broken, the bubbles affecting the test result of the insulating oil is avoided, the test accuracy is improved, at the same time, the up and down reciprocating movement of the filter plate can collect the impurities and bubbles in the insulating oil, the influence of the impurities on the test result of the insulating oil is avoided, and the impurity removal effect is improved.

[0011] 3. The insulating oil dielectric strength test device, in use, the electric sliding block is started, the electric sliding block slides in the inner wall of the slide rail to the direction close to the test oil cup, drives the third support to move to the direction close to the test oil cup, the third support moves to drive the third connecting plate to move, the third connecting plate moves to drive the pneumatic piston rod to move, the pneumatic piston rod moves to drive the electrode to move to the direction of the test oil cup, then the pneumatic piston rod is started, the active end of the pneumatic piston rod is elongated to drive the electrode to move downwards, until the electrode is inserted into the test oil cup and contacts with the insulating oil, in the test, the electrode contacts with the insulating oil to produce discharge phenomenon, when the electric field is too concentrated, the electric sliding block reversely moves to drive the symmetrical electrode to reversely move, the distance between the electrodes can be adjusted to ensure the uniform distribution of the electric field and optimize the performance of the transformer, and by adjusting the electrode spacing, the electric field strength can be controlled, the electric field is avoided to be too concentrated, the safety performance of the device is improved, when the test is finished, the pneumatic piston rod is retracted to drive the electrode to move upwards, when passing through the annular oil absorption sponge, the annular oil absorption sponge can absorb the insulating oil attached to the electrode, the insulating oil attached to the electrode is avoided to affect the accuracy of subsequent test, the test efficiency is improved.

[0012] 4. The insulating oil dielectric strength testing device, in use, when the test is finished, the first electromagnetic valve is opened, and the insulating oil can be discharged from the oil outlet pipe. After the insulating oil is discharged, the inner wall and the bottom of the test oil cup will be attached with the old insulating oil, which will affect the test result of the next test. Therefore, the third motor is started, the driving shaft of the third motor rotates to drive the driving gear to rotate, the driving gear rotates to drive the meshed driven gear to rotate, the driven gear rotates to drive the rotating air pipe to rotate, the rotating air pipe rotates to drive the fourth connecting plate, the first connecting square pipe and the second connecting square pipe to rotate around the center of the rotating air pipe. Then, the second electromagnetic valve is opened, the path between the soap water tank and the first connecting square pipe is opened, the soap water is sprayed out through the first spray hole on the first connecting square pipe, and is sprayed on the old insulating oil on the inner wall of the test oil cup. Then, under the rotation of the first connecting square pipe, the second cleaning sponge cleans the inner wall of the test oil cup which is sprayed with the soap water, and the removal efficiency of the old insulating oil is improved. When the second cleaning sponge finishes cleaning, the second electromagnetic valve is closed, the third electromagnetic valve is opened, and the pure water in the pure water tank is sprayed out through the second spray hole on the second connecting square pipe, and is sprayed on the inner wall of the test oil cup. Then, under the rotation cleaning of the third cleaning sponge, the soap water and the remaining old insulating oil are removed, so as to avoid the influence of the residual soap water on the test result of the next test. At the same time, the soap water and the pure water flow to the bottom of the inner wall of the test oil cup. Then, under the cleaning and wiping of the first cleaning sponge, the cleaning efficiency is improved by the cleaning of the second cleaning sponge and the third cleaning sponge. In order to avoid the water remaining in the test oil cup, the air blower is started, the air generated by the air blower is transported to the inside of the rotating air pipe through the connecting air pipe, and is finally sprayed out through the air jet pipe, so as to dry the water in the test oil cup, avoid the influence of the residual water on the test result of the next test, and improve the accuracy of the test. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The insulating oil dielectric strength testing device structure schematic view of the present application; Figure 2 The internal connection structure schematic view of the insulating oil dielectric strength testing device of the present application; Figure 3 The dehydration device structure schematic view of the present application; Figure 4 The internal structure schematic view of the dehydration device of the present application; Figure 5 The impurity removal device connection structure schematic view of the present application; Figure 6 The impurity removal device structure schematic view of the present application; Figure 7 The pitch adjusting device structure schematic view of the present application; Figure 8 The cleaning device structure schematic view of the present application; Figure 9Structure diagram of one side of the cleaning device of the present application.

[0014] In the figure: 1, dust detection box; 2, observation window; 3, dehydration device; 4, first support seat; 5, test oil cup; 6, oil outlet pipe; 7, first electromagnetic valve; 8, oil inlet pipe; 9, cleaning device; 10, impurity removal device; 11, distance adjusting device; 31, second support seat; 32, water collecting tank; 33, dehydration tank; 34, oil collecting tank; 35, high-pressure water pump; 36, connecting oil pipe; 37, transportation water pipe; 38, fixing block; 39, dehydration roller; 310, dehydration hole; 311, first support; 312, first connecting plate; 313, first motor; 314, first connecting rod; 315, oil pump; 101, second support; 102, second connecting plate; 103, second motor; 104, threaded rod; 105, sliding guide rod; 106, impurity filter plate; 107, oil filter hole; 108, second connecting rod; 109, stirring plate; 111, sliding rail; 112, electric sliding block; 113, third support; 114, third connecting plate; 115, pneumatic piston rod; 116, electrode; 117, fixing rod; 118, fixing sleeve ring; 119, annular oil absorption sponge; 91, rotating air pipe; 92, second electromagnetic valve; 93, driven gear; 94, driving gear; 95, third motor; 96, connecting air pipe; 97, air blower; 98, fourth connecting plate; 99, first cleaning sponge; 910, soap water tank; 911, pure water tank; 912, first connecting square pipe; 913, second connecting square pipe; 914, third electromagnetic valve; 915, fourth electromagnetic valve; 916, first spray hole; 917, second spray hole; 918, second cleaning sponge; 919, third cleaning sponge; 920, air jet pipe. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0016] Please refer to Figures 1-4The application provides a technical scheme: an insulating oil dielectric strength testing device, which comprises a dustproof detection box 1, an observation window 2 is penetrated through one side of the dustproof detection box 1 and is fixedly connected, a dehydration device 3 is fixedly connected to the top of the dustproof detection box 1, a first supporting seat 4 is fixedly connected to the inner wall bottom of the dustproof detection box 1, a test oil cup 5 is fixedly connected to the top of the first supporting seat 4, an oil outlet pipe 6 is communicated at the bottom of the test oil cup 5, a first electromagnetic valve 7 is sleeved and fixedly connected on the oil outlet pipe 6, an oil inlet pipe 8 is communicated at the top of one side of the test oil cup 5, the oil inlet pipe 8 penetrates through the top of the inner wall of the dustproof detection box 1 and is fixedly connected with the dehydration device 3, a cleaning device 9 is penetratingly and rotatably connected at the bottom of the test oil cup 5, impurity removal devices 10 are fixedly connected to the parts of the inner wall bottom of the dustproof detection box 1 located on both sides of the test oil cup 5, distance adjusting devices 11 are fixedly connected to the parts of the inner wall bottom of the dustproof detection box 1 located on both sides of the test oil cup 5, the dehydration device 3 comprises a second supporting seat 31, the second supporting seat 31 is fixedly connected to the top of a water collecting tank 32, the water collecting tank 32 is fixedly connected to the top of a dehydration tank 33, the water collecting tank 32 is provided with two groups and is symmetrically distributed at the bottom of the dehydration tank 33, the bottom of the dehydration tank 33 is communicated with the water collecting tank 32, a collecting tank 34 is fixedly connected to one side of the water collecting tank 32, a water inlet of a high-pressure water pump 35 is communicated with the side of the water collecting tank 32 away from the collecting tank 34, a water outlet of the high-pressure water pump 35 is communicated with a water conveying pipe 37, a fixing block 38 is sleeved and fixedly connected on the water conveying pipe 37, one side of the fixing block 38 is fixedly connected with the dehydration tank 33, a dehydration roller 39 is penetratingly and rotatably connected to the top of the dehydration tank 33, dehydration holes 310 are formed in the side surface and the bottom of the dehydration roller 39, the dehydration roller 39 is located above the collecting tank 34, first supports 311 are fixedly connected to both sides of the dehydration tank 33, first connecting plates 312 are fixedly connected to the top of the first supports 311, a first motor 313 is fixedly connected to the top of the first connecting plate 312, a driving shaft of the first motor 313 penetrates through the first connecting plate 312 and is fixedly connected with a first connecting rod 314, the first connecting rod 314 extends into the dehydration roller 39 and is fixedly connected with the inner wall bottom of the dehydration roller 39, a water inlet of an oil pump 315 is communicated with the bottom of the collecting tank 34, a connecting oil pipe 36 is communicated with the water outlet of the oil pump 315, the second supporting seat 31 is fixedly connected to the top of the dustproof detection box 1, and the bottom of the connecting oil pipe 36 is communicated with the oil inlet pipe 8.

[0017] When in use, the insulating oil needs to be pretreated before testing, the first motor 313 is started, the driving shaft of the first motor 313 rotates to drive the first connecting rod 314 to rotate, the first connecting rod 314 drives the dehydration roller 39 to rotate, then the insulating oil is poured into the dehydration roller 39, under the centrifugal rotation of the dehydration roller 39, the water with a larger density is thrown to the outside, and the oil with a smaller density is gathered to the inside, so that the water is thrown from the dehydration hole 310 in the inner wall of the dehydration roller 39 to the dehydration tank 33, and then falls into the water collecting tank 32, and the insulating oil falls from the dehydration hole 310 at the bottom of the dehydration roller 39 and falls into the oil collecting tank 34 at the bottom, then the high-pressure water pump 35 is started, the water in the water collecting tank 32 is pumped out from the water inlet and transported to the conveying water pipe 37 from the water outlet, and is transported to the inside of the dehydration roller 39 again for secondary dehydration under the transportation of the conveying water pipe 37, so that the dehydration efficiency is improved, the insulating oil is prevented from being thrown out with the water, the cost waste is reduced, and the dehydration efficiency is improved, when testing, the oil pump 315 is started, the insulating oil in the oil collecting tank 34 is pumped out from the oil inlet and transported to the oil inlet pipe 8 from the oil outlet, and finally transported to the test oil cup 5 for testing work.

[0018] Please refer to Figures 1-6 The application provides a technical scheme: the impurity removal device 10 comprises a second support 101, a second connecting plate 102 is fixedly connected to the top of the second support 101, a second motor 103 is fixedly connected to the top of the second connecting plate 102, a threaded rod 104 is rotatably connected to the top of the second connecting plate 102 in a penetrating mode, the driving shaft of the second motor 103 is fixedly connected to the top of the threaded rod 104, sliding guide rods 105 are fixedly connected to the portions of the top of the second connecting plate 102 located on the two sides of the threaded rod 104 in a penetrating mode, a filter plate 106 is threadedly connected to the threaded rod 104 in a sleeving mode, oil filtering holes 107 are uniformly formed in the top of the filter plate 106, the sliding guide rods 105 penetrate the top of the filter plate 106 and are slidably connected with the filter plate 106, a second connecting rod 108 is fixedly connected to the bottom of the threaded rod 104, stirring plates 109 are fixedly connected to the second connecting rod 108 in a uniform mode, the second support 101 is fixedly connected with the inner wall bottom of the dustproof detection tank 1, the second support 101 is symmetrically arranged on the two sides of the test oil cup 5, and the stirring plates 109 are located in the test oil cup 5.

[0019] In use, before testing, the bubbles and impurities in the insulating oil in the test oil cup 5 need to be removed, the second motor 103 is started, the driving shaft of the second motor 103 rotates to drive the threaded rod 104 to rotate, the threaded rod 104 rotates to drive the filter plate 106 to move up and down under the limiting action of the sliding guide rod 105, and at the same time, the threaded rod 104 rotates to drive the second connecting rod 108 to rotate, the second connecting rod 108 rotates to drive the stirring plate 109 to stir the insulating oil in the test oil cup 5, the impurities and bubbles in the insulating oil can be filtered out from the insulating oil by the up-and-down reciprocating movement of the filter plate 106, and the up-and-down movement facilitates the impurities to fall on the bottom of the filter plate 106 through the filter oil hole 107, and at the same time, the stirring plate 109 stirs the insulating oil, so that the bubbles in the insulating oil can be broken, the bubbles are avoided to affect the test result of the insulating oil, the accuracy of the test is improved, and at the same time, the up-and-down reciprocating movement of the filter plate 106 can collect the impurities and bubbles in the insulating oil, the impurities are avoided to affect the test result of the insulating oil, and the impurity removal effect is improved.

[0020] Please refer to Figures 1-7 The application provides a technical solution: the distance adjusting device 11 comprises a sliding rail 111, an electric sliding block 112 is slidably connected to the inner wall of the sliding rail 111, a third support 113 is fixedly connected to the top of the electric sliding block 112, a third connecting plate 114 is fixedly connected to the top of the third support 113, a fixed end of a pneumatic piston rod 115 is fixedly connected to the top of the third connecting plate 114, a movable end of the pneumatic piston rod 115 penetrates through the third connecting plate 114 and is fixedly connected with an electrode 116, a fixed rod 117 is fixedly connected to one side of the third support 113, a fixed sleeve ring 118 is fixedly connected to the end, away from the third support 113, of the fixed rod 117, an annular oil absorption sponge 119 is fixedly connected to the inner wall of the fixed sleeve ring 118, the sliding rail 111 is fixedly connected to the bottom of the inner wall of the dustproof detection box 1, the sliding rail 111 is symmetrically distributed on the two sides of the test oil cup 5, and the size of the annular oil absorption sponge 119 is matched with the size of the electrode 116.

[0021] In use, the electric sliding block 112 is started, and the electric sliding block 112 slides in the inner wall of the sliding rail 111 to the direction close to the test oil cup 5, drives the third support 113 to move to the direction close to the test oil cup 5, the third support 113 drives the third connecting plate 114 to move, the third connecting plate 114 drives the pneumatic piston rod 115 to move, the pneumatic piston rod 115 drives the electrode 116 to move to the direction of the test oil cup 5, then the pneumatic piston rod 115 is started, the active end of the pneumatic piston rod 115 is elongated to drive the electrode 116 to move downward, until the electrode 116 extends into the test oil cup 5 and contacts with the insulating oil, in the test, the electrode 116 contacts with the insulating oil to generate discharge phenomenon, when the electric field is too concentrated, the electric sliding block 112 reverses to move, drives the symmetrical electrode 116 to reverse, by adjusting the distance between the electrodes 116, the uniform distribution of the electric field and the optimization of the performance of the transformer can be ensured, and by adjusting the distance between the electrodes 116, the electric field intensity can be controlled, the safety performance of the device can be improved, when the test is finished, the pneumatic piston rod 115 is retracted, drives the electrode 116 to move upward, when passing through the annular oil absorption sponge 119, the annular oil absorption sponge 119 can absorb the insulating oil attached to the electrode 116, avoids the insulating oil attached to the electrode 116, influences the accuracy of the subsequent test, improves the test efficiency.

[0022] Please refer to Figures 1-9The application provides a technical scheme that the cleaning device 9 comprises a rotating air pipe 91, the rotating air pipe 91 is uniformly connected with a jet pipe 920, the rotating air pipe 91 is sleeved and fixedly connected with a second electromagnetic valve 92, a driven gear 93 is sleeved and fixedly connected with the part below the second electromagnetic valve 92 of the rotating air pipe 91, the driven gear 93 is meshed with a driving gear 94 on the side, the driving gear 94 is fixedly connected with the driving shaft of a third motor 95 on the top, the bottom of the rotating air pipe 91 is connected with a connecting air pipe 96, the rotating air pipe 91 is rotationally connected with the connecting air pipe 96, the end, away from the rotating air pipe 91, of the connecting air pipe 96 is connected with the air outlet of an air blower 97, the rotating air pipe 91 is sleeved and fixedly connected with a fourth connecting plate 98 above the second electromagnetic valve 92, the bottom of the fourth connecting plate 98 is fixedly connected with a first cleaning sponge 99, the top of the rotating air pipe 91 is fixedly connected with a soap water tank 910 and a pure water tank 911 respectively, the part, away from the rotating air pipe 91, of the bottom of the soap water tank 910 is connected with a first connecting square pipe 912, the part, away from the rotating air pipe 91, of the bottom of the pure water tank 911 is connected with a second connecting square pipe 913, the first connecting square pipe 912 is sleeved and fixedly connected with a third electromagnetic valve 914, the second connecting square pipe 913 is sleeved and fixedly connected with a fourth electromagnetic valve 915, the first connecting square pipe 912 is uniformly provided with a first jet hole 916 on one side, the second connecting square pipe 913 is uniformly provided with a second jet hole 917 on one side, the part, on the side of the first jet hole 916, of the first connecting square pipe 912 is fixedly connected with a second cleaning sponge 918 on the side, the part, on the side of the second jet hole 917, of the second connecting square pipe 913 is fixedly connected with a third cleaning sponge 919 on the side, the bottom of the first connecting square pipe 912 is fixedly connected with the fourth connecting plate 98, the bottom of the second connecting square pipe 913 is fixedly connected with the fourth connecting plate 98, the first connecting square pipe 912 and the second connecting square pipe 913 are symmetrically arranged on the two sides of the rotating air pipe 91, the rotating air pipe 91 penetrates through the bottom of the inner wall of the test oil cup 5 and is rotationally connected with the test oil cup 5, the third motor 95 is fixedly connected with the bottom of the test oil cup 5, and the air blower 97 is fixedly connected with the bottom of the test oil cup 5.

[0023] When the test is finished, the first electromagnetic valve 7 is opened, and the insulating oil can be discharged from the oil outlet pipe 6. After the insulating oil is discharged, the inner wall and the bottom of the test oil cup 5 will be attached with the old insulating oil, which will affect the result of the next test. Therefore, the third motor 95 is started, the driving shaft of the third motor 95 rotates to drive the driving gear 94 to rotate, the driving gear 94 rotates to drive the engaged driven gear 93 to rotate, the driven gear 93 rotates to drive the rotating air pipe 91 to rotate, the rotating air pipe 91 rotates to drive the fourth connecting plate 98, the first connecting square pipe 912 and the second connecting square pipe 913 to rotate around the center of the rotating air pipe 91. Then, the second electromagnetic valve 92 is opened, the path between the soap water tank 910 and the first connecting square pipe 912 is opened, the soap water is sprayed out through the first spray hole 916 on the first connecting square pipe 912, and is sprayed on the old insulating oil on the inner wall of the test oil cup 5. Then, under the rotation of the first connecting square pipe 912, the second cleaning sponge 918 cleans the inner wall of the test oil cup 5 which is sprayed with the soap water, and improves the removal efficiency of the old insulating oil. When the second cleaning sponge 918 finishes cleaning, the second electromagnetic valve 92 is closed, and the third electromagnetic valve 914 is opened. The pure water in the pure water tank 911 is sprayed out through the second spray hole 917 on the second connecting square pipe 913, and is sprayed on the inner wall of the test oil cup 5. Then, under the rotation cleaning of the third cleaning sponge 919, the soap water and the remaining old insulating oil are removed, so as to avoid the influence of the residual soap water on the test result of the next test. At the same time, the soap water and the pure water flow to the inner wall and the bottom of the test oil cup 5. Then, under the cleaning and wiping of the first cleaning sponge 99, the cleaning efficiency is improved by the cleaning of the second cleaning sponge 918 and the third cleaning sponge 919. In order to avoid the water remaining in the test oil cup 5, the air blower 97 is started, the air generated by the air blower 97 is transported to the inside of the rotating air pipe 91 through the connecting air pipe 96, and is finally sprayed out through the air jet pipe 920, so as to dry the water in the test oil cup 5, avoid the influence of the residual water on the test result of the next test, and improve the accuracy of the test.

[0024] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and the related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods which are not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A device for testing the dielectric strength of insulating oil, characterized in that: The device includes a dustproof testing box (1), with an observation window (2) fixedly connected to one side of the dustproof testing box (1), a dehydration device (3) fixedly connected to the top of the dustproof testing box (1), a first support base (4) fixedly connected to the bottom of the inner wall of the dustproof testing box (1), a test oil cup (5) fixedly connected to the top of the first support base (4), an oil outlet pipe (6) connected to the bottom of the test oil cup (5), a first solenoid valve (7) fitted and fixedly connected to the oil outlet pipe (6), an oil inlet pipe (8) connected to the top of one side of the test oil cup (5), the oil inlet pipe (8) penetrating the top of the inner wall of the dustproof testing box (1) and fixedly connected to the dehydration device (3), a cleaning device (9) penetrating and rotatably connected to the bottom of the test oil cup (5), a cleaning device (10) fixedly connected to the bottom of the inner wall of the dustproof testing box (1) on both sides of the test oil cup (5), and a distance adjustment device (11) fixedly connected to the bottom of the inner wall of the dustproof testing box (1) on both sides of the test oil cup (5).

2. The insulating oil dielectric strength testing device according to claim 1, characterized in that: The dehydration device (3) includes a second support base (31), a water collection tank (32) is fixedly connected to the top of the second support base (31), and a dehydration tank (33) is fixedly connected to the top of the water collection tank (32). The water collection tank (32) is provided with two sets and symmetrically distributed at the bottom of the dehydration tank (33). The bottom of the dehydration tank (33) is connected to the water collection tank (32). An oil collection tank (34) is fixedly connected to one side of the water collection tank (32). The side of the water collection tank (32) away from the oil collection tank (34) is connected to the inlet of a high-pressure water pump (35). The outlet of the high-pressure water pump (35) is connected to a transport water pipe (37). A fixing block (38) is sleeved and fixedly connected to the transport water pipe (37). One side of the fixing block (38) is fixedly connected to the dehydration tank (33). A dehydration tank (33) is rotatably connected through the top of the dehydration tank (33). A water drum (39) is provided with dehydration holes (310) on its side and bottom. The dehydration drum (39) is located above the oil collection tank (34). The dehydration tank (33) is fixedly connected to both sides of a first bracket (311). The first bracket (311) is fixedly connected to the top of a first connecting plate (312). The first connecting plate (312) is fixedly connected to the top of a first motor (313). The drive shaft of the first motor (313) passes through the first connecting plate (312) and is fixedly connected to a first connecting rod (314). The first connecting rod (314) extends into the interior of the dehydration drum (39) and is fixedly connected to the bottom of the inner wall of the dehydration drum (39). The bottom of the oil collection tank (34) is connected to the oil inlet of an oil pump (315). The oil outlet of the oil pump (315) is connected to a connecting oil pipe (36).

3. The insulating oil dielectric strength testing device according to claim 2, characterized in that: The second support (31) is fixedly connected to the top of the dustproof detection box (1), and the bottom of the connecting oil pipe (36) is connected to the oil inlet pipe (8).

4. The insulating oil dielectric strength testing device according to claim 1, characterized in that: The impurity removal device (10) includes a second bracket (101), a second connecting plate (102) fixedly connected to the top of the second bracket (101), a second motor (103) fixedly connected to the top of the second connecting plate (102), a threaded rod (104) passing through and rotatably connected to the top of the second connecting plate (102), the top of the threaded rod (104) being fixedly connected to the drive shaft of the second motor (103), and the portion of the top of the second connecting plate (102) located on both sides of the threaded rod (104). All are connected by a sliding guide rod (105), and a filter plate (106) is sleeved and threaded onto the threaded rod (104). The top of the filter plate (106) is evenly provided with oil filter holes (107). The sliding guide rod (105) passes through the top of the filter plate (106) and is slidably connected to the filter plate (106). The bottom of the threaded rod (104) is fixedly connected to a second connecting rod (108), and a stirring plate (109) is evenly fixedly connected to the second connecting rod (108).

5. The insulating oil dielectric strength testing device according to claim 4, characterized in that: The second bracket (101) is fixedly connected to the bottom of the inner wall of the dustproof testing box (1). The second bracket (101) is symmetrically arranged on both sides of the test oil cup (5). The stirring plate (109) is located inside the test oil cup (5).

6. The insulating oil dielectric strength testing device according to claim 1, characterized in that: The adjusting device (11) includes a slide rail (111), an electric slider (112) is slidably connected to the inner wall of the slide rail (111), a third bracket (113) is fixedly connected to the top of the electric slider (112), a third connecting plate (114) is fixedly connected to the top of the third bracket (113), a fixed end of a pneumatic piston rod (115) is fixedly connected to the top of the third connecting plate (114), the movable end of the pneumatic piston rod (115) passes through the third connecting plate (114) and is fixedly connected to an electrode (116), a fixed rod (117) is fixedly connected to one side of the third bracket (113), a fixed collar (118) is fixedly connected to the end of the fixed rod (117) away from the third bracket (113), and an annular oil-absorbing sponge (119) is fixedly connected to the inner wall of the fixed collar (118).

7. The insulating oil dielectric strength testing device according to claim 6, characterized in that: The slide rail (111) is fixedly connected to the bottom of the inner wall of the dustproof testing box (1). The slide rail (111) is symmetrically distributed on both sides of the test oil cup (5). The size of the annular oil-absorbing sponge (119) is adapted to the size of the electrode (116).

8. The insulating oil dielectric strength testing device according to claim 1, characterized in that: The cleaning device (9) includes a rotating air pipe (91), on which jet pipes (920) are evenly connected. A second solenoid valve (92) is sleeved and fixedly connected to the rotating air pipe (91). A driven gear (93) is sleeved and fixedly connected to the portion of the rotating air pipe (91) below the second solenoid valve (92). A driving gear (94) meshes with the side of the driven gear (93). The drive shaft of a third motor (95) is fixedly connected to the top of the driving gear (94). A connecting air pipe (95) is connected to the bottom of the rotating air pipe (91). 96), the rotating air pipe (91) is rotatably connected to the connecting air pipe (96), and the end of the connecting air pipe (96) away from the rotating air pipe (91) is connected to the air outlet of the induced draft fan (97). A fourth connecting plate (98) is sleeved and fixedly connected above the second solenoid valve (92) on the rotating air pipe (91). A first cleaning sponge (99) is fixedly connected to the bottom of the fourth connecting plate (98). A soap water tank (910) and a pure water tank (911) are fixedly connected to the top of the rotating air pipe (91). The bottom of the soap water tank (910) is away from the rotating air pipe. A portion of the pipe (91) is connected to a first connecting square pipe (912), and the bottom of the pure water tank (911) away from the rotating air pipe (91) is connected to a second connecting square pipe (913). A third solenoid valve (914) is sleeved and fixedly connected to the first connecting square pipe (912), and a fourth solenoid valve (915) is sleeved and fixedly connected to the second connecting square pipe (913). A first spray hole (916) is evenly opened on one side of the first connecting square pipe (912), and a second spray hole (917) is evenly opened on one side of the second connecting square pipe (913). A second cleaning sponge (918) is fixedly connected to the side of the first nozzle (916) located on one side of the first nozzle (916). A third cleaning sponge (919) is fixedly connected to the side of the second connecting square tube (913) located on one side of the second nozzle (917). The bottom of the first connecting square tube (912) is fixedly connected to the fourth connecting plate (98). The bottom of the second connecting square tube (913) is fixedly connected to the fourth connecting plate (98). The first connecting square tube (912) and the second connecting square tube (913) are symmetrically arranged on both sides of the rotating air pipe (91).

9. The insulating oil dielectric strength testing device according to claim 8, characterized in that: The rotating air pipe (91) passes through the bottom of the inner wall of the test oil cup (5) and is rotatably connected to the test oil cup (5). The third motor (95) is fixedly connected to the bottom of the test oil cup (5). The blower (97) is fixedly connected to the bottom of the test oil cup (5).

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