Discharge defect fault positioning device and positioning method thereof

Abstract

The invention relates to the technical field of detection and positioning of discharge defects and faults, in particular to a discharge defect and fault positioning device and a positioning method thereof.The discharge defect and fault positioning device comprises a transverse detection box, and an electric control type connecting seat is movably assembled on one side of the transverse detection box. According to the discharge defect fault positioning device and the positioning method thereof, an unmanned operation mode is adopted, suspension type mobile detection can be automatically carried out on the outer side of a high-voltage cable, the detection efficiency is greatly improved, and the cost is reduced; the overturning adjustment of the electric control type connecting base can be controlled through the electric control overturning covers located on the two sides of the electric control type connecting base, then the cable is installed and limited in cooperation with the two control arms on the outer side faces of the electric control overturning covers, the distance between the electric control type connecting base and the cable can be adjusted, and the detection precision and stability are guaranteed. Through overturning adjustment of the electric control type connecting seat, transition can be carried out on equipment at a cable joint, manual switching is not needed, and the operation difficulty and continuity are greatly enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of detection and location of discharge defect faults, and in particular to a discharge defect fault location device and a location method thereof. Background Art

[0002] With the development of power technology, more and more high-voltage direct current transmission projects have been put into operation one after another. In order to improve the safety and stability of transmission equipment, an on-line monitoring and fault warning system will be installed remotely to ensure the reliability of power supply. However, since it only simply identifies the patterns and faults of partial discharge of DC cables, it is impossible to accurately locate the defects and the positions of discharges, resulting in high later maintenance difficulty and cost. At the same time, it is also impossible to prevent in time before problems occur, resulting in insufficient prevention ability. Regular manual high-altitude climbing inspections are still required, which makes the operation difficult and very dangerous. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the current detection method only simply identifies the patterns and faults of partial discharge of DC cables, and it is impossible to accurately locate the defects and the positions of discharges, resulting in high later maintenance difficulty and cost. At the same time, it is also impossible to prevent in time before problems occur, resulting in insufficient prevention ability. Regular manual high-altitude climbing inspections are still required, which makes the operation difficult and very dangerous.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a discharge defect fault location device, including a horizontally placed detection box, on one side of which an electrically controlled connection seat is movably assembled. An upper electrically controlled flipping cover and a lower electrically controlled flipping cover are movably sleeved outside the electrically controlled connection seat. Two upper control arms are movably assembled on the outer side surface of the upper electrically controlled flipping cover, and two lower control arms are movably assembled on the outer side surface of the lower electrically controlled flipping cover. Electrically controlled flipping limit drive wheel sets are movably assembled at the ends of the upper control arms and the lower control arms. An arc-shaped detection module with a staggered layout is movably assembled inside the horizontally placed detection box.

[0005] The horizontally placed detection box and the electrically controlled connection seat are movably assembled through a lateral connection bracket, and a first built-in adjustment motor for controlling the horizontal flipping of the horizontally placed detection box is installed at the movable connection end of the horizontally placed detection box inside the electrically controlled connection seat.

[0006] The upper electrically controlled flipping cover includes an upper cover shell movably assembled with the horizontally placed detection box by inserting first assembly shaft cylinders on both inner walls into the upper connecting arm of the horizontally placed detection box, and a second built-in adjustment motor installed inside the first assembly shaft cylinder.

[0007] The lower-position electric control flip cover includes a lower-position cover shell movably assembled with a horizontal detection box by inserting second assembly shaft cylinders on the inner walls of both sides into the lower connecting arms on the lower side of the horizontal detection box, and a third built-in adjustment motor installed inside the second assembly shaft cylinders.

[0008] Both the outer sides of the upper-position cover shell and the lower-position cover shell have outwardly protruding external assembly shafts. The upper-position control arm is movably assembled with both sides of the upper-position cover shell by sleeving an upper lateral transmission seat on the connecting end over the external assembly shaft. The lower-position control arm is movably assembled with both sides of the lower-position cover shell by sleeving a lower lateral transmission seat on the connecting end over the external assembly shaft.

[0009] Electric control adjustment worms are installed inside both the upper lateral transmission seat and the lower lateral transmission seat. An adjustment worm wheel matched with the electric control adjustment screw is axially sleeved on the outer side of the external assembly shaft.

[0010] The ends of the upper-position control arm and the lower-position control arm are provided with end connection brackets for connecting an electric control flip limit drive wheel set. The electric control flip limit drive wheel set includes an end mounting seat movably installed on the end connection bracket, an external limit frame fixed on the outer side of the end mounting seat, and an electric drive wheel movably installed inside the external limit frame.

[0011] Two arc-shaped guide rails arranged in a staggered and reverse manner are fixedly assembled inside the horizontal detection box. The arc-shaped detection module includes an arc-shaped detection frame slidably assembled inside the arc-shaped guide rails, an optical detection probe, an infrared thermal imager, a ultraviolet detector fixed inside the arc-shaped detection frame, and two control motors fixed on the side walls of the arc-shaped guide rails for controlling the arc-shaped detection frame.

[0012] Arc-shaped storage grooves with openings at both ends are provided at the upper and lower ends of the horizontal detection box. Embedded laser positioning modules are installed inside the arc-shaped storage grooves. Arc-shaped positioning seats protruding into the arc-shaped storage grooves are provided inside both the upper-position cover shell and the lower-position cover shell. Internal light-transmitting openings are provided at positions corresponding to the embedded laser positioning modules inside the arc-shaped positioning seats.

[0013] A positioning method for a discharge defect fault positioning device. The electro-controlled connector is flipped upward by two upper control arms on the outer side of the upper electro-controlled flip cover, and both sides of the cable for detection are set. Then, it is flipped upward above the cable by the electro-controlled flip limit drive wheel set, so that the whole device is suspended above the cable for detection. Then, the upper control arm is flipped downward to reduce the gap between the lower surface of the cable and the electro-controlled connector, and the cable is set at the central position of the arc detection module. The electro-controlled flip limit drive wheel set starts to control the device to translate along the cable. During the translation process, the arc detection module slides along the arc guide rail for detection, and the optical detection probe, infrared thermal imager, and ultraviolet detector are used to detect the damage, temperature, and discharge phenomenon on the surface of the cable. When encountering an obstruction at the connector, the pressure sensor on the outer side of the electro-controlled flip limit drive wheel set at the obstruction end receives a squeezing signal, controls the electro-controlled flip limit drive wheel set to stop, and then the electro-controlled connector is flipped outward counterclockwise. After flipping 180 degrees, the embedded laser positioning module at the upper end of the horizontal detection box is started to position the cable. If the cable is directly detected, the horizontal detection box does not need to be flipped horizontally. If the cable is not detected, the horizontal flipping adjustment starts, swinging left and right until the cable position is detected. Then, the lower electro-controlled flip cover originally located below is transferred to the upper side. Then, the lower control arms on both sides of the lower electro-controlled flip cover are flipped upward. After flipping to the highest position, the electro-controlled flip limit drive wheel set on the lower control arm is flipped upward above the cable, so that the whole device is suspended above the cable for detection. Then, the upper control arm is flipped downward to reduce the gap between the lower surface of the cable and the electro-controlled connector, and the cable is set at the central position of the arc detection module. The original upper control arm is flipped upward and the electro-controlled flip limit drive wheel set at its end is separated from the cable, and then it is reset and attached to the outer side of the lower end of the horizontal detection box. By repeating such operations, the defect fault detection and positioning of the whole cable can be carried out.

[0014] The beneficial effects of the present invention are as follows:

[0015] (1) The discharge defect fault positioning device and its positioning method of the present invention can automatically perform suspended movement detection on the outer side of the high-voltage cable by adopting an unmanned operation mode, greatly improving the detection efficiency and reducing the cost;

[0016] (2) Through the electro-controlled flip covers located on both sides of the electro-controlled connector, the electro-controlled connector can be controlled to flip and adjust, and then cooperate with the two control arms on the outer side of the electro-controlled flip cover to install and limit the cable, and the distance between the electro-controlled connector and the cable can be adjusted to ensure the detection accuracy and stability;

[0017] (3) Through the flipping adjustment of the electro-controlled connector, the device can be transitioned at the cable joint, without manual switching, greatly enhancing the operation difficulty and continuity;

[0018] (4) By adopting the method of translation plus rotation, the detection range can be maximally improved, avoiding the occurrence of missed detections, and the detection data is more comprehensive and accurate;

[0019] (5) Adopting a method that allows for quick separation and loading / unloading facilitates the installation of the equipment and reduces the difficulty of loading and unloading;

[0020] (6) The overall structure of the equipment is compact and the layout is reasonable, making it convenient to carry and use;

[0021] (7) The entire device can be applicable to cables in various usage scenarios, with a wide range of applications;

[0022] (8) By measuring a variety of parameters, the detection data is more accurate. Description of the Drawings

[0023] The present invention will be further described below in conjunction with the drawings and embodiments.

[0024] Figure 1 is a schematic structural diagram of the present invention.

[0025] Figure 2 is a schematic internal structural diagram of the present invention.

[0026] Figure 3 is a side view of the present invention.

[0027] Figure 4 is a schematic internal structural diagram of the lower control arm of the present invention. Detailed Description of the Embodiment

[0028] The present invention will now be further described in detail in conjunction with the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, and therefore only showing the components related to the present invention.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Figure 1 、 Figure 2 、 Figure 3 and Figure 4A discharge defect fault location device shown in the figure includes a horizontally placed detection box 1. An electrically controlled connection seat 2 is movably assembled on one side of the horizontally placed detection box 1. An upper electrically controlled flipping cover 3 and a lower electrically controlled flipping cover 4 are movably sleeved outside the electrically controlled connection seat 2. Two upper control arms 5 are movably assembled on the outer surface of the upper electrically controlled flipping cover 3. Two lower control arms 6 are movably assembled on the outer surface of the lower electrically controlled flipping cover 4. An electrically controlled flipping limit drive wheel set 7 is movably assembled at the ends of the upper control arms 5 and the lower control arms 6. An arc detection module 8 with a misaligned layout is movably assembled inside the horizontally placed detection box 1.

[0031] To adjust the horizontal angle of the horizontally placed detection box 1, the horizontally placed detection box 1 and the electrically controlled connection seat 2 are movably assembled through a lateral connection bracket. A first built-in adjustment motor 9 for controlling the horizontal flipping of the horizontally placed detection box 1 is installed at the movable connection end of the horizontally placed detection box 1 inside the electrically controlled connection seat 2.

[0032] The first built-in adjustment motor 9 is meshed with the inner tooth surface of the connection surface of the electrically controlled connection seat 2 through the end gear on the adjustment shaft. The first built-in adjustment motor 9 drives the end gear to rotate by rotating, thereby controlling the angle flipping of the horizontally placed detection box 1.

[0033] To cooperate with the top assembly and adjustment, the upper electrically controlled flipping cover 3 includes an upper cover shell 31 movably assembled with the horizontally placed detection box 1 by inserting the first assembly shaft cylinders on both inner walls into the upper side connection arm of the horizontally placed detection box 1, and a second built-in adjustment motor 32 installed inside the first assembly shaft cylinder.

[0034] The second built-in adjustment motor 32 is meshed with the connection tooth surface of the horizontally placed detection box 1 through the gear on its adjustment shaft. The second built-in adjustment motor 32 can drive and adjust the angle between the horizontally placed detection box 1 and the upper cover shell 31.

[0035] To cooperate with the bottom assembly and adjustment, the lower electrically controlled flipping cover 4 includes a lower cover shell 41 movably assembled with the horizontally placed detection box 1 by inserting the second assembly shaft cylinders on both inner walls into the lower side connection arm of the horizontally placed detection box 1, and a third built-in adjustment motor 42 installed inside the second assembly shaft cylinder.

[0036] The third built-in adjustment motor 42 is meshed with the connection tooth surface of the horizontally placed detection box 1 through the gear on its adjustment shaft. The third built-in adjustment motor 42 can drive and adjust the angle between the horizontally placed detection box 1 and the lower cover shell 41.

[0037] To cooperate with the assembly, both the outer surfaces of the upper cover shell 31 and the lower cover shell 41 have outwardly protruding external assembly shafts. The upper control arm 5 is movably assembled with both side surfaces of the upper cover shell 31 by sleeving the upper lateral transmission seat 51 at the connection end on the external assembly shaft. The lower control arm 6 is movably assembled with both side surfaces of the lower cover shell 41 by sleeving the lower lateral transmission seat 61 at the connection end on the external assembly shaft.

[0038] To cooperate with the angle adjustment, electric control adjusting worm gears 10 are installed inside both the upper lateral transmission seat 51 and the lower lateral transmission seat 61, and adjusting worm wheels 11 that cooperate with the electric control adjusting screw rods 10 are axially sleeved on the outer side of the outer assembly shaft. The adjusting worm wheels 11 are fixedly assembled with the outer side of the outer assembly shaft.

[0039] The electric control adjusting worm gears 10 and the adjusting worm wheels 11 form a worm and worm wheel mechanism. The electric control adjusting worm gears 10 drive the rotation of the adjusting worm wheels 11 on the outer side of the outer assembly shaft by rotation, thereby driving the entire upper lateral transmission seat 51 and lower lateral transmission seat 61 to rotate, so as to change the angles of the upper control arm 5 or the lower control arm 6.

[0040] To cooperate with the adjustment limit, the ends of the upper control arm 5 and the lower control arm 6 are provided with end connection brackets for connecting the electric control type flipping limit drive wheel set 7. The electric control type flipping limit drive wheel set 7 includes an end mounting seat 71 movably installed on the end connection bracket, an outer limit frame 72 fixed to the outer side of the end mounting seat 71, and an electric drive wheel 73 movably installed inside the outer limit frame 72.

[0041] The end connection seat 71 flips along the end connection bracket, then the outer limit frame 72 is sleeved above the cable, and is supported and driven by the electric drive wheel 73.

[0042] Then, the horizontal detection box 1 at the bottom is used to cooperate with the limit.

[0043] To cooperate with the rotation adjustment and detection, two arc-shaped guide rails 12 arranged in a staggered and reverse manner are fixedly assembled inside the horizontal detection box 1. The arc-shaped detection module 8 includes an arc-shaped detection frame 81 slidably assembled inside the arc-shaped guide rails 12, an optical detection probe 82 fixed inside the arc-shaped detection frame 81, an infrared thermal imager 83, an ultraviolet detector 84, and two control motors 85 fixed on the side walls of the arc-shaped guide rails 12 for controlling the arc-shaped detection frame 81.

[0044] The control motors 85 are meshed with the outer tooth surface of the arc-shaped detection frame 81 through the adjustment gears at the control ends.

[0045] To cooperate with the adjustment and positioning, arc-shaped storage grooves with openings at both ends are provided at the upper and lower ends of the horizontal detection box 1. Embedded laser positioning modules 13 are installed inside the arc-shaped storage grooves. Arc-shaped positioning seats protruding towards the inside of the arc-shaped storage grooves are provided inside both the upper housing 31 and the lower housing 41. Internal light-transmitting openings are provided at the positions corresponding to the embedded laser positioning modules 13 inside the arc-shaped positioning seats.

[0046] The embedded laser positioning module 13 emits laser upwards and performs positioning by detecting the distance. When the horizontal detection box 1 is directly below the cable, the detection distance is the shortest.

[0047] A positioning method for a discharge defect fault positioning device. The electric control type connecting seat 2 is flipped upward through two upper control arms 5 on the outer side of the upper electric control flipping cover 3, and both sides of the cable for detection are arranged. Then, it is flipped upward above the cable through the electric control type flipping limit drive wheel set 7, so that the whole device is suspended above the cable for detection. Then, the upper control arm 5 is flipped downward to reduce the gap between the lower surface of the cable and the electric control type connecting seat 2, and the cable is arranged at the central position of the arc detection module 8. The electric control type flipping limit drive wheel set 7 starts to control the device to translate along the cable. During the translation process, the arc detection module 8 slides and detects along the arc guide rail 12, and the optical detection probe 82, the infrared thermal imager 83, and the ultraviolet detector 84 are used to detect the damage, temperature, and discharge phenomenon on the surface of the cable. When encountering an obstacle at the connector, the pressure sensor outside the electric control type flipping limit drive wheel set 7 at the obstacle end receives a squeezing signal, controls the electric control type flipping limit drive wheel set 7 to stop, and then the electric control type connecting seat 2 is flipped outward counterclockwise. After flipping 180 degrees, the embedded laser positioning module 13 at the upper end of the horizontal detection box 1 is started to position the cable. If the cable is directly detected, the horizontal detection box 1 does not need to be flipped horizontally. If the cable is not detected, the horizontal flipping adjustment is started, swinging left and right until the cable position is detected. Then, the lower electric control flipping cover 4 originally located below is transferred to above, and the lower control arms 6 on both sides of the lower electric control flipping cover 4 are flipped upward. After flipping to the highest position, the electric control type flipping limit drive wheel set 7 on the lower control arms 6 is flipped upward above the cable, so that the whole device is suspended above the cable for detection. Then, the upper control arm 5 is flipped downward to reduce the gap between the lower surface of the cable and the electric control type connecting seat 2, and the cable is arranged at the central position of the arc detection module 8. And the original upper control arm 5 is flipped upward and the electric control type flipping limit drive wheel set 7 at its end is separated from the cable and reset to fit on the outer side of the lower end of the horizontal detection box 1. By operating in this way repeatedly, the detection and positioning of the defects and faults of the whole cable can be carried out.

[0048] Enlightened by the ideal embodiments of the present invention described above, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A discharge defect fault location device, comprising a horizontally placed detection box (1), characterized in that: An electrically controlled connecting seat (2) is movably mounted on one side of the horizontal detection box (1); an upper electrically controlled flip cover (3) and a lower electrically controlled flip cover (4) are movably sleeved on the outer side of the electrically controlled flip cover (2); two upper control arms (5) are movably mounted on the outer side of the upper electrically controlled flip cover (3); two lower control arms (6) are movably mounted on the outer side of the lower electrically controlled flip cover (4); electrically controlled flip limit drive wheel sets (7) are movably mounted at the ends of the upper control arms (5) and the lower control arms (6); and an arc-shaped detection module (8) with a staggered layout is movably mounted inside the horizontal detection box (1).

2. A discharge defect fault location device according to claim 1, characterized in that: The horizontal detection box (1) and the electrically controlled connection seat (2) are movably assembled via a lateral connection bracket, and a first built-in adjustment motor (9) for controlling the horizontal flipping of the horizontal detection box (1) is installed inside the electrically controlled connection seat (2) at the movable connection end of the horizontal detection box (1).

3. A discharge defect fault location device according to claim 1, characterized in that: The upper electrically controlled flip cover (3) comprises an upper cover shell (31) which is inserted into an upper connecting arm of a horizontal detection box (1) through a first assembly shaft cylinder on the inner walls on both sides and is movably assembled with the horizontal detection box (1), and a second built-in adjustment motor (32) installed inside the first assembly shaft cylinder.

4. A discharge defect fault location device according to claim 3, characterized in that: The lower electrically controlled flip cover (4) comprises a lower cover shell (41) which is inserted into the lower connecting arm of the horizontal detection box (1) through the second assembly shaft cylinder on the inner walls on both sides and is movably assembled with the horizontal detection box (1), and a third built-in adjustment motor (42) installed inside the second assembly shaft cylinder.

5. A discharge defect fault location device according to claim 4, characterized in that: The outer sides of the upper cover shell (31) and the lower cover shell (41) are both provided with an external assembly shaft protruding outwards, the upper control arm (5) is movably assembled with the two side surfaces of the upper cover shell (31) on the external assembly shaft via an upper lateral transmission seat sleeve on the connecting end, and the lower control arm (6) is movably assembled with the two side surfaces of the lower cover shell (41) on the external assembly shaft via a lower lateral transmission seat sleeve on the connecting end.

6. A discharge defect fault location device according to claim 5, characterized in that: An electrically controlled adjusting worm (10) is installed inside the upper lateral transmission seat and the lower lateral transmission seat, and an adjusting worm wheel (11) matching with the electrically controlled adjusting screw (10) is axially sleeved on the outer side surface of the external assembly shaft.

7. A discharge defect fault location device according to claim 1, characterized in that: The ends of the upper control arm (5) and the lower control arm (6) are provided with end connection brackets for connecting to an electrically controlled flip limit drive wheel set (7); the electrically controlled flip limit drive wheel set (7) comprises an end mounting seat (71) movably mounted on the end connection bracket, an external limit frame (72) fixed to the outside of the end mounting seat (71), and an electric drive wheel (73) movably mounted inside the external limit frame (72).

8. A discharge defect fault location device according to claim 1, characterized in that: The horizontal detection box (1) is fixedly equipped with two arc-shaped guide rails (12) arranged in an offset and opposite direction. The arc-shaped detection module (8) comprises an arc-shaped detection frame (81) slidably mounted inside the arc-shaped guide rail (12), an optical detection probe (82) fixed inside the arc-shaped detection frame (81), an infrared thermal imager (83), an ultraviolet detector (84), and two control motors (85) fixed on the side wall of the arc-shaped guide rail (12) for controlling the arc-shaped detection frame (81).

9. A discharge defect fault location device according to claim 4, characterized in that: The upper and lower ends of the horizontal detection box (1) are both provided with arc-shaped storage grooves with openings at both ends, and an embedded laser positioning module (13) is installed inside the arc-shaped storage groove. The upper cover shell (31) and the lower cover shell (41) are both provided with arc-shaped positioning seats protruding toward the inside of the arc-shaped storage groove, and an internal light-transmitting port is opened inside the arc-shaped positioning seat corresponding to the position of the embedded laser positioning module (13).

10. A method for locating a discharge defect fault locating device, characterized in that: The electrically controlled connection seat (2) is turned upwards through two upper control arms (5) on the outer side of the upper electrically controlled flip cover (3), and the two sides of the cable for detection are arranged. Then, the electrically controlled flip limit driving wheel group (7) is turned upwards toward the cable, so that the whole device is suspended above the cable for detection. Then, the upper control arm (5) is turned downwards to reduce the gap between the lower surface of the cable and the electrically controlled connection seat (2), and the cable is arranged at the center of the arc detection module (8). The electrically controlled flip limit driving wheel group (7) is started to control the device to move along the arc detection module (8). The cable is translated, and during the translation process, the arc detection module (8) slides along the arc guide rail (12) for detection, and uses an optical detection probe (82), an infrared thermal imager (83), and an ultraviolet detector (84) to detect the damage, temperature, and discharge phenomenon on the cable surface; when encountering an obstruction of the connector, the pressure sensor on the outside of the electrically controlled flip limit driving wheel group (7) at the obstruction end receives an extrusion signal, controls the electrically controlled flip limit driving wheel group (7) to stop, and then the electrically controlled connector (2) flips outward in a counterclockwise direction, and then flips 18 After the cable is turned to 0 degrees, the embedded laser positioning module (13) on the upper end of the horizontal detection box (1) is started to locate the cable position. If the cable is directly detected, the horizontal detection box (1) does not need to be flipped horizontally. If the cable is not detected, the horizontal flip adjustment is started and the cable is swung left and right until the cable position is detected. Then, the lower electric-controlled flip cover (4) originally located at the bottom is transferred to the top, and then the lower control arms (6) on both sides of the lower electric-controlled flip cover (4) are flipped upwards. After flipping to the highest position, the electric-controlled flip cover on the lower control arm (6) is turned upwards. The limit driving wheel set (7) is flipped upwards towards the cable, so that the entire device is suspended above the cable for detection, and then the upper control arm (5) is flipped downwards to reduce the gap between the lower surface of the cable and the electrically controlled connecting seat (2), and the cable is set at the center of the arc-shaped detection module (8). The upper control arm (5) is flipped upwards to separate the electrically controlled flip limit driving wheel set (7) at its end from the cable, and reset to fit the lower outer side of the horizontal detection box (1). In this way, the reciprocating operation can detect and locate the defects of the entire cable.

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