A device for simulating guano flashover test

Abstract

The invention discloses a device for simulating a bird droppings flashover test, including a box and a power distribution unit, wherein the box is hollow inside and has an opening facing forward, the power distribution unit is arranged on the box, and provides power and drive for each component in the box; a cross plate and a slide plate, wherein the cross plate is arranged above the inside of the box and reciprocates relative to the cross plate; a drip assembly is arranged below the slide plate, and a cross arm is detachably connected to the box and arranged below the drip assembly, and a flashover phenomenon occurs when the bird droppings simulation of the drip assembly contacts the cross arm; a high-speed camera is arranged between the drip assembly and the cross arm, and the bird droppings flashover phenomenon is monitored. The advantages of the invention are: through different drip assemblies, the random dripping of bird droppings under different conditions is simulated, and then the flashover process of the transmission line under the condition of bird droppings pollution can be simulated, so as to truly reflect the bird droppings pollution condition on the actual transmission line, and provide an experimental platform for studying the flashover mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of multiple bird droppings flashover test, in particular to a device for simulating bird droppings flashover test. Background Art

[0002] Guano flashover refers to the phenomenon of electrical flashover caused by bird droppings on power facilities such as transmission line towers or insulators, which mainly occurs on high-voltage transmission lines. When bird droppings fall between insulators or other live parts and the grounded parts, due to their conductivity, especially in humid environments, they will change the electric field distribution in these areas and increase the local electric field strength. Once the electric field strength exceeds the breakdown threshold of air or insulating media, it may cause the breakdown of the air gap, resulting in a brief arc discharge between the live body and the grounded body, i.e., flashover, which may cause a short-term power outage on the line or even damage the equipment.

[0003] With the improvement of ecological environment and the increase of awareness of bird protection, the growth of bird population and the expansion of activity range have brought new challenges to the safe operation of overhead transmission lines, especially the increase of guano flashover accidents. Such accidents not only threaten the stability of the power system, but also may cause large-scale power outages and affect social and economic activities. Since bird activities are difficult to predict, guano flashover has a strong randomness. Although the probability of its occurrence is low, once it occurs, the consequences are serious. At night, due to the reduction of bird activities and high humidity, the conductivity of the air is enhanced, and guano flashover is more likely to occur.

[0004] Therefore, studying the time law of guano flashover becomes the key to preventing bird damage. At present, although there have been some experimental studies on guano flashover, there is still a lack of effective equipment to apply the research results to practice. Summary of the invention

[0005] The invention provides a device for simulating a guano flashover test, which is used to solve the defect of the prior art that there is a lack of an effective device for simulating a guano flashover test.

[0006] Therefore, the present invention provides a device for simulating a guano flashover test, comprising:

[0007] A box body and a power distribution unit, wherein the box body is hollow inside and has an opening facing forward, and the power distribution unit is arranged on the box body to provide power and drive for various components in the box body;

[0008] A horizontal plate and a sliding plate, wherein the horizontal plate is arranged above the interior of the box body, and the sliding plate is arranged below the horizontal plate and performs linear reciprocating motion relative to the horizontal plate;

[0009] The dripping assembly is arranged below the slide plate and is used to simulate the flashover phenomenon caused by the dropping of bird droppings under different conditions according to different test requirements;

[0010] A cross arm, which is detachably connected to the box body and is disposed below the drip assembly, and a flashover phenomenon occurs when the bird droppings simulant of the drip assembly contacts the cross arm;

[0011] A high-speed camera is arranged between the drip assembly and the cross arm to monitor the guano flashover phenomenon.

[0012] According to the device for simulating bird droppings flashover test provided by the present invention, the cross plate is fixedly connected to the box body, the front and rear parts of the cross plate are both provided with grooves, a positioning rod is fixedly connected in the groove, the slide plate and the positioning rod are slidably connected, a motor seat 1 is fixedly connected to the motor seat 1, a rotating plate 1 is fixedly connected to the output shaft of the motor 1, a plug shaft 3 is rotatably connected to the rotating plate 1, a rotating plate 2 is rotatably connected to the plug shaft 3, a plug shaft 4 is rotatably connected to the side of the rotating plate 2 away from the plug shaft 3, a sliding groove is provided on the side of the cross plate away from the motor 1, the plug shaft 4 passes through the sliding groove, and is fixedly connected to a limited portion and a gear at the upper and lower parts of the sliding groove, respectively, the front and rear parts of the gear are meshed with a rack 1 and a rack 2, a small opening is provided on the rack 1, a slide rail 2 is fixedly connected to the bottom of the cross plate, the rack 1 is slidably connected to the slide rail 2 through the small opening, the two ends of the rack 2 are connected to the cross plate by the plug shaft 5, and the rack 1 and the slide plate are fixedly connected.

[0013] According to the device for simulating bird droppings flashover test provided by the present invention, the dripping assembly includes an electromagnet part, a magnetic ball is adsorbed by electromagnetic force below the electromagnet part, when the electromagnet part is powered off, the magnetic ball loses the connection with the electromagnet part, a steering box used in conjunction with the magnetic ball is arranged below the magnetic ball, and the steering box can be steered according to the falling situation of the magnetic ball, both sides of the steering box are fixedly connected with a plug shaft 1, a rotating frame is rotatably connected to the plug shaft 1, the front and rear parts of the rotating frame are fixedly connected with a plug shaft 2, the plug shaft 2 is rotatably connected with a support plate 2, the support plate 2 is fixedly connected to the bottom of the slide board, the bottom of the steering box is fixedly connected with a connecting part, the bottom of the connecting part is fixedly connected with a buffer block, the periphery of the buffer block is provided with a fixed frame, the buffer block is connected to the fixed frame by a plurality of springs, the front and rear parts of the fixed frame are fixedly connected with a support rod, the support rod is fixedly connected to the support plate 2, the bottom of the buffer block is fixedly connected with a connecting pipe, the bottom of the connecting pipe is fixedly connected with a nozzle, and the connecting pipe is fed by connecting to an additional feeding mechanism.

[0014] According to the device for simulating bird droppings flashover test provided by the present invention, the steering box is provided with an upward opening, the opening is closed from bottom to top, and the closed opening is larger than the diameter of the magnetic ball. A protrusion is fixedly connected to the middle of the bottom of the steering box, and the protrusion is located directly below the magnetic ball. When the magnetic ball falls, it will hit the protrusion and change the falling direction. A plurality of evenly distributed concave surfaces are provided on the bottom surface of the bottom of the steering box. When the magnetic ball falls, it is engaged in one of the concave surfaces after turning to cause the steering box to turn.

[0015] According to the device for simulating bird droppings flashover test provided by the present invention, the feeding mechanism includes a storage barrel with a delivery pump, the storage barrel is arranged outside the box body, and stores bird droppings simulation liquid, the storage barrel is connected by a delivery hose and a connecting pipe, the bird droppings simulation liquid is delivered to the connecting pipe through the delivery hose, and finally discharged from the nozzle.

[0016] According to the device for simulating bird droppings flashover test provided by the present invention, the dripping assembly includes a frame, the frame is fixedly connected to the bottom of the slide, a winding roller is arranged inside the frame, an iron wire is wound on the winding roller, the iron wire is used to simulate bird droppings, and the winding roller performs intermittent rotation movement inside the frame.

[0017] According to the device for simulating bird droppings flashover test provided by the present invention, one end of the winding roller is connected to the bottom of the skateboard by providing a support plate three, and the other end is fixedly connected to a groove wheel, the groove wheel is provided with a combination of several groups of shift grooves and circular arcs, a dial is attached to the inner surface of one of the circular arcs, a half-notch is provided on the dial, a shift block is provided at the half-notch, a shift rod is fixedly connected to the shift block, the shift rod is connected to the center of the dial, a side of the dial away from the shift rod is fixedly connected to a motor two, the motor two is connected to the skateboard by providing a motor seat two, a bearing on the output shaft of the motor two is connected to a support plate four, the support plate four is fixedly connected to the bottom of the skateboard, a guide cylinder is fixedly connected to the inner bottom wall of the frame, the iron wire enters the guide cylinder, passes through the frame and extends to the bottom of the frame.

[0018] According to the device for simulating bird droppings flashover test provided by the present invention, the lower parts of both sides of the inner wall of the box body are fixedly connected with a slide rail, the cross arm is slidably connected to the slide rail, a hand groove is arranged in front of the cross arm, a through groove is opened on one side of the box body, the high-speed camera is arranged in the through groove, a support plate is fixedly connected to the outer wall of one side of the box body, and the high-speed camera is fixedly connected to the support plate.

[0019] According to the device for simulating bird droppings flashover test provided by the present invention, a cleaning component is also provided, and the cleaning component includes a cleaning box with a delivery pump, the cleaning box is connected to a nozzle via a water pipe, a clamping block is provided on one side of the box body, and the nozzle is clamped on the clamping block.

[0020] According to the device for simulating bird droppings flashover test provided by the present invention, a collection box is arranged below the cross arm, and the collection box can be drawn out and arranged at the bottom of the box body.

[0021] Compared with the existing technology, the advantages of the present invention are: the present invention designs different dripping components. On the one hand, the dripping components can randomly drip on the crossarm to simulate the randomness of bird dropping; on the other hand, the present invention also uses iron wire to simulate the situation where bird droppings drip in the air and are pulled up and hung on the crossarm. In this way, the flashover process of the transmission line under bird dropping pollution conditions can be simulated to truly reflect the bird dropping pollution conditions on the actual transmission line, and provide an experimental platform for studying the flashover mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 Schematic diagram of the device provided by the first embodiment of the present invention Figure 1 ;

[0024] Figure 2 Schematic diagram of the device provided by the first embodiment of the present invention Figure 2

[0025] Figure 3 is a front view of the device provided by the first embodiment of the present invention;

[0026] Figure 4 is a three-dimensional schematic diagram of the reciprocating motion structure provided by the first embodiment of the present invention Figure 1 ;

[0027] Figure 5 is a three-dimensional schematic diagram of the reciprocating motion structure provided by the first embodiment of the present invention Figure 2 ;

[0028] Figure 6 The present invention Figure 5 A magnified view of point A;

[0029] Figure 7is a three-dimensional schematic diagram of a drip assembly provided by a second embodiment of the present invention;

[0030] Figure 8 is a front cross-sectional view of a drip assembly provided by a second embodiment of the present invention;

[0031] Fig. 9 is a three-dimensional cross-sectional view of a steering box provided by a second embodiment of the present invention;

[0032] Fig.10 is a three-dimensional schematic diagram of a drip assembly provided in a third embodiment of the present invention;

[0033] Fig.11 is a front view of a drip assembly provided by a third embodiment of the present invention;

[0034] Fig.12 is a three-dimensional diagram of a groove wheel assembly of a drip assembly provided in a third embodiment of the present invention;

[0035] Fig.13 The test device provided in the fourth embodiment of the present invention is shown in FIG. Figure 1 ;

[0036] Fig.14 The test device provided in the fourth embodiment of the present invention is shown in FIG. Figure 2 ;

[0037] Fig.15 The test device provided in the fifth embodiment of the present invention is shown in FIG. Figure 1 ;

[0038] Fig.16 The test device provided in the fifth embodiment of the present invention is shown in FIG. Figure 2 ;

[0039] As shown in the figure, the reference numerals of the present invention are as follows:

[0040] 1. Box; 2. Power distribution unit; 3. Horizontal board; 4. Slide plate; 5. Cross arm; 6. High-speed camera; 7. Groove; 8. Positioning rod; 9. Motor seat 1; 10. Motor 1; 11. Rotating plate 1; 12. Plug shaft 3; 13. Rotating plate 2; 14. Plug shaft 4; 15. Sliding groove; 16. Limiting unit; 17. Gear; 18. Rack 1; 19. Rack 2; 20. Small opening; 21. Slide rail 2; 22. Plug shaft 5; 23. Electromagnet unit; 24. Magnetic ball; 25. Steering box; 26. Plug shaft 1; 27. Rotating frame; 28. Plug shaft 2; 29. ​​Support plate 2; 30. Connecting unit; 31. Buffer block; 32 , fixing frame; 33, spring; 34, support rod; 35, connecting pipe; 36, nozzle; 37, protrusion; 38, concave surface; 39, storage barrel; 40, delivery hose; 41, frame; 42, winding roller; 43, wire; 44, support plate three; 45, groove wheel; 46, pulley groove; 47, arc; 48, dial; 49, pulley block; 50, pulley; 51, motor two; 52, motor seat two; 53, support plate four; 54, guide cylinder; 55, slide rail one; 56, hand pulley groove; 57, through groove; 58, support plate one; 59, cleaning box; 60, water pipe; 61, nozzle; 62, block; 63, collection box; DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0042] The present invention provides the following embodiments:

[0043] First embodiment:

[0044] Combination Figure 1 to Figure 6This embodiment discloses a device for simulating a bird droppings flashover test, which mainly includes: a box 1, a horizontal plate 3, a slide plate 4, a drip assembly, a cross arm 5 and a high-speed camera 6, wherein the box 1 is hollow inside and has an opening facing forward, the power distribution unit 2 is arranged on the box 1, and provides power and drive for each component in the box 1; the horizontal plate 3 is arranged on the upper part of the inside of the box 1, and the slide plate 4 is arranged on the lower part of the horizontal plate 3, and performs a linear reciprocating motion relative to the horizontal plate 3; the drip assembly is arranged below the slide plate 4, which is used to simulate the scene of bird droppings dripping, and has the function of simulating different bird droppings according to different test requirements, when the horizontal plate 3 reciprocates, the drip assembly reciprocates with the horizontal plate 3. The cross arm 5 is detachably connected to the box 1 and is arranged below the drip assembly. Specifically, a slide rail 55 is fixedly connected to the lower part of both sides of the inner wall of the box 1, and the cross arm 5 is slidably connected to the slide rail 55, and a hand-gripping groove 56 is arranged in front of the cross arm 5. After the test, the cross arm 5 will inevitably become dirty or worn. Therefore, when the cross arm 5 needs to be replaced or maintained, the test personnel only need to use their hands to pull out the hand-pushing groove 56 to remove the cross arm 5 for replacement.

[0045] When the guano simulant of the drip assembly contacts the cross arm 5, a flashover phenomenon occurs; this flashover phenomenon is monitored by a high-speed camera 6, which is arranged between the drip assembly and the cross arm 5, and a through slot 57 is provided on one side of the box body 1, and the high-speed camera 6 is arranged in the through slot 57, and a support plate 58 is fixedly connected to the outer wall of one side of the box body 1, and the high-speed camera 6 is fixedly connected to the support plate 58. Through the monitoring of the high-speed camera 6, the flashover phenomenon caused by the guano simulant can be analyzed, providing a platform and samples for subsequent research.

[0046] After the test is completed, the main body of the device needs to be cleaned. For this purpose, the present invention also provides a cleaning component, which includes a cleaning box 59 with a delivery pump. The cleaning box 59 is connected to a nozzle 61 through a water pipe 60. A clamping block 62 is provided on one side of the box body 1, and the nozzle 61 is clamped on the clamping block 62. In addition, a collecting box 63 is provided below the cross arm 5, and the collecting box 63 can be pulled out at the bottom of the box body 1. Therefore, during use, the delivery pump inside the cleaning box 59 is powered on and driven to deliver clean water to the nozzle 61. At this time, the tester removes the nozzle 61 from the clamping block 62, aligns it with the part to be cleaned of the equipment, and then cleans it. The cleaned sewage falls into the collecting box 63. When the collecting box 63 is overflowing, it is pulled out for cleaning.

[0047] Among the above-mentioned components, if you want to drive the slide plate 4 to reciprocate under the cross plate 3, you need to design a corresponding reciprocating motion structure. Therefore, in order to achieve this purpose, in a preferred embodiment of the present invention, the cross plate 3 and the box body 1 are fixedly connected. At the same time, grooves 7 are provided at the front and rear parts of the cross plate 3, and a positioning rod 8 is fixedly connected in the groove 7. The slide plate 4 and the positioning rod 8 are slidably connected, so that the slide plate 4 remains guided and stable when sliding. A motor base 9 is fixedly connected to one side of the transverse plate 3, a motor 10 is fixedly connected to the motor base 9, a rotating plate 11 is fixedly connected to the output shaft of the motor 10, a plug shaft 3 12 is rotatably connected to the rotating plate 11, a rotating plate 2 13 is rotatably connected to the plug shaft 3 12, a plug shaft 4 14 is plugged into the side of the rotating plate 2 13 away from the plug shaft 3 12, a sliding groove 15 is provided on the side of the transverse plate 3 away from the motor 10, the plug shaft 4 14 passes through the sliding groove 15, and a limited portion 16 and a gear 17 are fixedly connected to the upper and lower parts of the sliding groove 15 respectively, a rack 18 and a rack 2 19 are respectively meshed at the front and rear parts of the gear 17, a small opening 20 is provided on the rack 18, a slide rail 21 is fixedly connected to the bottom of the transverse plate 3, the rack 18 is slidably connected to the slide rail 21 through the small opening 20, both ends of the rack 2 19 are connected to the transverse plate 3 by means of plug shaft 5 22, and the rack 18 and the slide plate 4 are fixedly connected.

[0048] Therefore, when the present embodiment is implemented, the motor 10 is powered on and started, and its output shaft drives the rotating plate 11 to make a circular motion. During the circular motion, the rotating plate 11 and the rotating plate 2 13 are connected at the place, that is, the plug shaft 3 12, which will be displaced in the horizontal direction. Therefore, the rotating plate 2 13 will be displaced, driving the gear 17 where the plug shaft 4 14 is located to be displaced. Since the gear 17 and the rack 2 19 are meshed, the gear 17 will rotate synchronously during the displacement process under the influence of the meshing; and since the gear 17 and the rack 1 18 are also meshed, when the gear 17 rotates, it will drive the rack 1 18 to slide, and then move back and forth on the slide rail 2 21. Since the rack 18 and the slide plate 4 are fixedly connected, the slide plate 4 will realize the above-mentioned reciprocating motion.

[0049] The beneficial effect of this embodiment is that the dripping assembly described in this embodiment can be equipped with the function of simulating the dripping of different bird droppings according to different test requirements, thereby simulating the scene of bird droppings, and through the monitoring of the high-speed camera 6, the flashover phenomenon caused by the bird droppings simulant can be analyzed, providing a platform and samples for subsequent research. At the same time, the structure of controlling the slide plate 4 to reciprocate can also assist in the realization of the above functions and improve the efficiency of the test and research.

[0050] Second embodiment:

[0051] During the simulation test, there is a situation where bird droppings drip onto the cross arm 5 but do not fall off. That is, in daily life, birds stand on the top of the tower and excrete bird droppings, which fall directly down in the form of a slender column. Or, bird droppings fall onto the cross arm 5 of the transmission tower after excretion, and then flow down from the cross arm 5, also in the form of a slender column. This puts forward requirements for the bird droppings simulant during the simulation test. It requires that the bird droppings simulant be in a liquid state and have a certain viscosity. In real life, affected by various factors, the falling of bird droppings is quite random, and the random part includes but is not limited to the height and angle of the drop. Therefore, in order to fully simulate its randomness, combined with Figures 7-9 Based on the first embodiment, this embodiment provides a device for simulating a bird droppings flashover test. The other components of this embodiment are the same as those of the first embodiment, but the difference is the structure of the dripping component. In this embodiment,

[0052] The dripping assembly includes an electromagnet portion 23, and a magnetic ball 24 is electromagnetically adsorbed below the electromagnet portion 23. When the electromagnet portion 23 is powered off, the magnetic ball 24 loses its connection with the electromagnet portion 23 and falls off. When the electromagnet portion 23 is powered on, the magnetic ball 24 is affected by the magnetic adsorption and is re-adsorbed onto the electromagnet portion 23. At the same time, a steering box 25 is provided below the magnetic ball 24 for use therewith. The steering box 25 can be steered according to the falling condition of the magnetic ball 24. Specifically, as shown in the attached manual Fig. 9 As shown, the steering box 25 is provided with an upward opening, which is closed from bottom to top, and the closed opening is larger than the diameter of the magnetic ball 24, so that the magnetic ball 24 can smoothly fall into the steering box 25 and will not bounce out of the steering box 25. At the same time, a protrusion 37 is fixedly connected to the middle of the bottom of the steering box 25, and the protrusion 37 is located directly below the magnetic ball 24. When the magnetic ball 24 falls, it will hit the protrusion 37 and change the falling direction. This falling direction is affected by the wear of the magnetic ball 24 and the protrusion 37, and is also related to the current falling force. Since it cannot be dropped, it can be equivalent to the magnetic ball 24 falling. It will randomly turn in one direction in the steering box 25. At the same time, a number of evenly distributed concave surfaces 38 are provided on the bottom surface of the bottom of the steering box 25. The magnetic ball 24 falls and is clamped in one of the concave surfaces 38 after turning, so as to cause the steering box 25 to turn. Since the magnetic ball 24 itself has a certain mass, when the magnetic ball 24 is clamped inside one of the concave surfaces 38 , the steering box 25 will be tilted in the direction of the concave surface 38 .

[0053] At the same time, the above-mentioned Figure 7As shown, both sides of the steering box 25 are fixedly connected with an insert shaft 1 26, and the insert shaft 1 26 is rotatably connected with a rotating frame 27, and the front and rear parts of the rotating frame 27 are fixedly connected with an insert shaft 28, and the insert shaft 28 is rotatably connected with a support plate 29, and the support plate 29 is fixedly connected to the bottom of the slide plate 4, and the bottom of the steering box 25 is fixedly connected with a connecting portion 30, and the bottom of the connecting portion 30 is fixedly connected with a buffer block 31, and the bottom of the buffer block 31 is fixedly connected with a connecting pipe 35, and the bottom of the connecting pipe 35 is fixedly connected with a nozzle 36, and the connecting pipe 35 is fed by connecting to an additional feeding mechanism. Therefore, when the steering box 25 is tilted in a certain direction, it will drive the above-mentioned connecting structure to rotate. Specifically, when the steering box 25 is tilted forward and backward, the steering box 25 will complete the relative rotation with the rotating frame 27 through the plug shaft 1 26 to achieve the tilt; when it is tilted toward both sides, the steering box 25 will drive the rotating frame 27 together, with the plug shaft 28 as the rotating axis, and rotate toward both sides; and when the steering box 25 falls to other directions (such as the four corners), it will eventually achieve tilting and rotating in any direction through the combination of the above two rotations. This rotation will bring the connecting pipe 35 and the nozzle 36 under that flag to the direction opposite to the tilt, and the pre-prepared bird droppings simulation liquid will be randomly dripped on the cross arm 5 through the feeding structure, so as to monitor the flashover test.

[0054] When the test is over, in order to reset the steering box 25, the electromagnet part 23 needs to be powered on again. After powering on, the electromagnet part 23 will adsorb the magnetic ball 24 on it again. At this time, the steering box 25 needs to return to the horizontal position to prepare for the next test. In order to realize this process, the present invention is provided with a fixed frame 32 on the periphery of the buffer block 31, and the buffer block 31 is connected to the fixed frame 32 by a plurality of springs 33. The front and rear parts of the fixed frame 32 are fixedly connected with a support rod 34, and the support rod 34 is fixedly connected to the support plate 29. In addition, the force of this spring 33 in the deformation process needs to meet the following requirements: when the steering box 25 is unloaded, its unloaded gravity is less than the deformation force of the spring 33, and when the steering box 25 drives the magnetic ball 24 to tilt, its load force is greater than the deformation force of the spring 33. Therefore, when the steering box 25 is loaded, it tilts in a certain direction. During the tilting process, the buffer block 31 tilts in the opposite direction, driving the corresponding springs 33 to stretch or deform. These springs 33 generate deformation forces during the deformation process. When the steering box 25 is unloaded, the above-mentioned deformation force drives the buffer block 31 to move and finally reset.

[0055] After the above-mentioned mechanism is in place, a feeding structure is required for feeding. In the present embodiment, the above-mentioned feeding mechanism includes a storage barrel 39 with a delivery pump. The storage barrel 39 is arranged outside the box body 1 and stores the bird droppings simulated liquid. The storage barrel 39 is connected to the connecting pipe 35 by a delivery hose 40. The bird droppings simulated liquid is delivered to the connecting pipe 35 through the delivery hose 40 and finally discharged from the nozzle 36.

[0056] Therefore, the beneficial effect of this embodiment is that the magnetic ball 24 randomly falls into a concave surface 38 inside the steering box 25, thereby driving the steering box 25 to tilt, and then driving the nozzle 36 to tilt, so as to simulate the scene of random falling of bird droppings, analyze the flashover phenomenon caused by the bird droppings simulant, and provide a platform and samples for subsequent research.

[0057] Third embodiment:

[0058] During the simulation test, in addition to the bird droppings not being separated from the cross arm 5 and hanging on it, there is another situation where the bird droppings are separated from the cross arm 5, that is, after being discharged, the bird droppings are separated from the bird's body and stretched, falling or rubbing on the cross arm 5. Since it is difficult to control the length of the bird droppings when using liquid to simulate bird droppings, and it is also impossible to control the bird droppings to be separated from the cross arm 5, therefore, in this embodiment, the iron wire 43 is used to replace the original bird droppings simulation liquid to simulate the bird droppings to achieve the test effect. Figures 10-12 Based on the first embodiment, this embodiment provides a device for simulating a bird droppings flashover test. The other components of this embodiment are the same as those of the first embodiment, but the difference is the structure of the dripping component. In this embodiment, the dripping component includes a frame 41, and the frame 41 is fixedly connected to the bottom of the slide 4. A winding roller 42 is arranged in the frame 41, and an iron wire 43 is wound on the winding roller 42. A guide cylinder 54 is fixedly connected to the bottom wall of the frame 41. The iron wire 43 enters the guide cylinder 54, passes through the frame 41, and extends to the bottom of the frame 41. The iron wire 43 on the winding roller 42 is lowered to simulate bird droppings.

[0059] In order to achieve quantitative and accurate delivery of simulated bird droppings, the present invention has a winding roller 42 with one end connected to the bottom of the skateboard 4 by providing a support plate three 44, and a groove wheel 45 is fixedly connected to the other end. The groove wheel 45 is provided with a combination of a plurality of groups of shift grooves 46 and circular arcs 47, and a dial 48 is attached to the inner surface of one of the circular arcs 47, and a half-notch is provided on the dial 48, and a shift block 49 is provided at the half-notch. A shift rod 50 is fixedly connected to the shift block 49, and the shift rod 50 is connected to the center of the dial 48. A motor 2 51 is fixedly connected to the side of the dial 48 away from the shift rod 50. The motor 2 51 is connected to the skateboard 4 by providing a motor seat 2 52, and the output shaft of the motor 2 51 is connected to a support plate 4 53. The support plate 4 53 is fixedly connected to the bottom of the skateboard 4.

[0060] Therefore, when the motor 2 51 is powered on, its output shaft will drive the dial 48 to rotate. During the rotation process, the dial 48 will drive the lever 50 and the shift block 49 to rotate synchronously. When the shift block 49 enters the shift slot 46, it will give a force to the slot wall. This force will drive the groove wheel 45 to rotate, and then drive the winding roller 42 to rotate, thereby lowering or winding the wire 43. Until the shift block 49 is disengaged from the shift slot 46, the groove wheel 45 and the winding roller 42 stop rotating, waiting for the shift block 49 to re-enter the next shift slot 46 after rotating one circle, and this cycle is repeated to achieve intermittent motion.

[0061] Therefore, the advantages of this embodiment are: the iron wire 43 is used to replace the original guano simulation liquid, so as to realize the control of the guano length, and each time the winding roller 42 rotates, the length under the winding roller 42 is uniform, so that the iron wire 43 is intermittently and quantitatively transported to complete the test, so as to analyze the flashover phenomenon caused by the guano simulant, and provide a platform and samples for subsequent research.

[0062] Fourth embodiment:

[0063] In combination with the first embodiment and the second embodiment, this embodiment further provides a method for simulating a flashover test of bird droppings. The method uses the apparatus described in the first embodiment and the second embodiment. Figures 13 and 14 (In the figure, B is a voltage regulator; T is a test transformer; r is a protective resistor; PT is a voltage transformer; W is an artificial pollution laboratory; PC is a working machine.), which includes the following steps:

[0064] The first step is to bring the composite insulator to the artificial pollution laboratory W and hang it;

[0065] Step 2: Add voltage and increase it to 190.5 kV (effective value) of the 330 kV line phase voltage and keep it constant;

[0066] The third step: turn on the power supply so that the storage bucket 39 with the delivery pump works, and the guano simulation liquid begins to fall;

[0067] Step 4: Use the high-speed camera 6 to capture the flashover image;

[0068] Step 5: Test the situation of bird droppings detaching from the crossarm;

[0069] In order to explain the above test in more detail, this embodiment uses the equipment shown in Table 1 below:

[0070]

[0071] Table 1. Equipment parameters and functions (I)

[0072] Fifth embodiment:

[0073] In combination with the first embodiment and the third embodiment, this embodiment further provides a method for simulating a flashover test of bird droppings. The method uses the apparatus described in the first embodiment and the third embodiment. Figures 15 and 16 (In the figure, B is a voltage regulator; T is a test transformer; r is a protective resistor; PT is a voltage transformer; W is an artificial pollution laboratory; PC is a working machine.), and its steps are the same as those of the fourth embodiment.

[0074] In order to explain the above test in more detail, this embodiment uses the equipment shown in Table 2 below:

[0075]

[0076] Table 2. Equipment parameters and functions (II)

[0077] Combining the fourth embodiment with the fifth embodiment, the advantages are:

[0078] (1) This method can simulate the behavior of bird droppings in different situations, including the situation where bird droppings are discharged from the top of the tower and then fall directly down in the form of a slender column, and the situation where bird droppings fall on the crossarm of the transmission tower and then flow down from the crossarm.

[0079] (2) By using high-speed cameras and other equipment, the device can capture and record flashover phenomena, thereby assessing the flashover risks that may be caused by bird droppings pollution. This is of great significance for formulating anti-bird droppings flashover measures and improving the safe and stable operation of the power grid.

[0080] (3) This method can compare the performance differences between clean composite insulators and dirty composite insulators under bird droppings contamination, thereby understanding the specific impact of contamination on insulator performance.

[0081] (4) By adjusting the conductivity, length and other parameters of the guano simulation solution, the device can study the impact of guano characteristics (such as conductivity, length, shape, etc.) on flashover risk.

[0082] Therefore, in summary, in combination with the first to fifth embodiments, a device for simulating a bird droppings flashover test and a method for simulating a bird droppings flashover test described in the present invention can provide technical support and theoretical basis for formulating anti-bird droppings measures.

[0083] It should be noted here that the electrical components appearing in this article are all connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of the present disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0084] In short, the above is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for simulating guano flashover test, characterized in that: include: A box body (1) and a power distribution unit (2), wherein the box body (1) is hollow inside and has an opening facing forward, and the power distribution unit (2) is arranged on the box body (1) to provide power and drive for various components in the box body (1); A transverse plate (3) and a slide plate (4), wherein the transverse plate (3) is arranged above the interior of the box body (1), and the slide plate (4) is arranged below the transverse plate (3) and performs linear reciprocating motion relative to the transverse plate (3); A dripping assembly is arranged below the slide plate (4) and is used to simulate the flashover phenomenon caused by the dripping of bird droppings under different conditions according to different test requirements; A cross arm (5), the cross arm (5) being detachably connected to the box body (1) and being arranged below the drip assembly, and causing a flashover phenomenon when the bird droppings simulant of the drip assembly contacts the cross arm (5); A high-speed camera (6) is disposed between the drip assembly and the cross arm (5) and is used to monitor the guano flashover phenomenon; The transverse plate (3) and the box body (1) are fixedly connected. The front and rear parts of the transverse plate (3) are provided with grooves (7). A positioning rod (8) is fixedly connected in the groove (7). The slide plate (4) and the positioning rod (8) are slidably connected. A motor seat (9) is fixedly connected to one side of the transverse plate (3). A motor (10) is fixedly connected to the motor seat (9). A rotating plate (11) is fixedly connected to the output shaft of the motor (10). A plug-in shaft (12) is rotatably connected to the rotating plate (11). A rotating plate (13) is rotatably connected to the plug-in shaft (12). A plug-in shaft (14) is plugged into the side of the rotating plate (13) away from the plug-in shaft (12). A sliding groove (15) is provided on the side away from the motor one (10) on the horizontal plate (3), the insertion shaft four (14) passes through the sliding groove (15), and is fixedly connected to a limiting portion (16) and a gear (17) at the upper and lower parts of the sliding groove (15), respectively, and the front and rear parts of the gear (17) are respectively meshed with a rack one (18) and a rack two (19), and a small opening (20) is provided on the rack one (18), and the bottom of the horizontal plate (3) is fixedly connected to a slide rail two (21), and the rack one (18) is slidably connected to the slide rail two (21) through the small opening (20), and the two ends of the rack two (19) are connected to the horizontal plate (3) by means of an insertion shaft five (22), and the rack one (18) and the slide plate (4) are fixedly connected.

2. The device for simulating guano flashover test according to claim 1, characterized in that: The drop assembly comprises an electromagnet portion (23), a magnetic ball (24) is electromagnetically attracted below the electromagnet portion (23), when the electromagnet portion (23) is powered off, the magnetic ball (24) loses connection with the electromagnet portion (23), a steering box (25) used in conjunction with the magnetic ball (24) is provided below the magnetic ball (24), the steering box (25) can be steered according to the falling condition of the magnetic ball (24), both sides of the steering box (25) are fixedly connected to a first plug shaft (26), a rotating frame (27) is rotatably connected to the first plug shaft (26), the front and rear parts of the rotating frame (27) are fixedly connected to a second plug shaft (28), the second plug shaft (28) is rotatably connected to a second support plate (29), the second support plate (29) 29) is fixedly connected to the bottom of the slide plate (4), the bottom of the steering box (25) is fixedly connected to a connecting portion (30), the bottom of the connecting portion (30) is fixedly connected to a buffer block (31), the periphery of the buffer block (31) is provided with a fixed frame (32), the buffer block (31) and the fixed frame (32) are connected to each other by a plurality of springs (33) provided therebetween, the front and rear parts of the fixed frame (32) are fixedly connected to a support rod (34), the support rod (34) is fixedly connected to the support plate 2 (29), the bottom of the buffer block (31) is fixedly connected to a connecting pipe (35), the bottom of the connecting pipe (35) is fixedly connected to a nozzle (36), and the connecting pipe (35) is connected to an additional feeding mechanism for feeding.

3. The device for simulating guano flashover test according to claim 2, characterized in that: The steering box (25) is provided with an upward opening, the opening is closed from bottom to top, and the closed opening is larger than the diameter of the magnetic ball (24). A protrusion (37) is fixedly connected to the middle of the bottom of the steering box (25). The protrusion (37) is located directly below the magnetic ball (24). When the magnetic ball (24) falls, it hits the protrusion (37) and changes the falling direction. A plurality of evenly distributed concave surfaces (38) are provided on the bottom surface of the bottom of the steering box (25). When the magnetic ball (24) falls, it is locked in one of the concave surfaces (38) after being turned, so as to cause the steering box (25) to turn.

4. The device for simulating guano flashover test according to claim 2, characterized in that: The feeding mechanism comprises a storage barrel (39) with a delivery pump, the storage barrel (39) being arranged outside the box body (1) and storing bird droppings simulated liquid, the storage barrel (39) being connected to the connecting pipe (35) via a delivery hose (40), the bird droppings simulated liquid being delivered to the connecting pipe (35) via the delivery hose (40) and finally discharged from the nozzle (36).

5. The device for simulating guano flashover test according to claim 1, characterized in that: The dripping assembly comprises a frame (41), the frame (41) being fixedly connected to the bottom of the slide plate (4), a winding roller (42) being arranged inside the frame (41), an iron wire (43) being wound around the winding roller (42), the iron wire (43) being used to simulate bird droppings, and the winding roller (42) performing intermittent rotational motion inside the frame (41).

6. The device for simulating guano flashover test according to claim 5, characterized in that: One end of the winding roller (42) is connected to the bottom of the slide plate (4) by means of a supporting plate (44), and the other end is fixedly connected to a groove wheel (45), wherein the groove wheel (45) is provided with a combination of a plurality of groups of shifting grooves (46) and circular arcs (47), wherein a dial (48) is fitted on the inner surface of one of the circular arcs (47), wherein a half-notch is provided on the dial (48), and a shifting block (49) is provided at the half-notch, wherein a shifting rod (50) is fixedly connected to the shifting block (49), and the shifting rod (50) is connected to the center of the dial (48). A second motor (51) is fixedly connected to a side of the dial (48) away from the lever (50); the second motor (51) is connected to the slide plate (4) by means of a second motor seat (52); a bearing on the output shaft of the second motor (51) is connected to a fourth support plate (53); the fourth support plate (53) is fixedly connected to the bottom of the slide plate (4); a guide cylinder (54) is fixedly connected to the inner bottom wall of the frame (41); the iron wire (43) enters the guide cylinder (54), passes through the frame (41), and then extends to the bottom of the frame (41).

7. The device for simulating guano flashover test according to claim 1, characterized in that: The lower parts of both sides of the inner wall of the box body (1) are fixedly connected to a slide rail (55), the cross arm (5) is slidably connected to the slide rail (55), a hand-gripping groove (56) is arranged in front of the cross arm (5), a through groove (57) is opened on one side of the box body (1), the high-speed camera (6) is arranged in the through groove (57), and a support plate (58) is fixedly connected to the outer wall of one side of the box body (1), and the high-speed camera (6) is fixedly connected to the support plate (58).

8. The device for simulating guano flashover test according to any one of claims 1 to 7, characterized in that: A cleaning assembly is also provided, the cleaning assembly comprising a cleaning box (59) with a delivery pump, the cleaning box (59) being connected to a spray head (61) via a water pipe (60), a clamping block (62) being provided on one side of the box body (1), and the spray head (61) being clamped on the clamping block (62).

9. The device for simulating guano flashover test according to claim 8, characterized in that: A collection box (63) is provided below the cross arm (5), and the collection box (63) is arranged at the bottom of the box body (1) in a drawable manner.

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