Electric leakage detection device for high-voltage transmission line

Abstract

A high-voltage transmission line electric leakage detection device disclosed by the present invention comprises a magnetic core body and an electric wire body, the outer surface of the magnetic core body is provided with a plurality of main winding assemblies used for generating a magnetic field, each main winding assembly comprises a main magnetic pole installed on the outer surface of the magnetic core body, and the electric wire body is installed in the main magnetic pole. A plurality of coil assemblies are wound on the outer surface of the main magnetic pole, an adjusting mechanism is arranged on the outer surface of the main magnetic pole and comprises a long plate installed on the outer surface of the magnetic core body, a second motor is fixedly installed at the bottom end of the long plate, and an output shaft of the second motor is fixedly connected with a screw rod; according to the invention, a plurality of bump assemblies are arranged on the outer surface of the main winding assembly, and the bumps can be inserted among the coils, so that the distance between the coils can be conveniently adjusted, and the device can flexibly adjust the coil layout and optimize the electromagnetic induction area according to the characteristics and detection requirements of different power transmission lines; and the detection precision and reliability are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage detection, and in particular to a leakage detection device for a high-voltage transmission line. Background Art

[0002] In the power system, the safe operation of high-voltage transmission lines is of vital importance. However, due to environmental factors, equipment aging or defects in the installation process, leakage sometimes occurs in the transmission lines, which not only leads to energy loss, but also may cause serious safety accidents such as fire and electric shock. Therefore, timely and accurate leakage detection of high-voltage transmission lines is an important measure to ensure the stable operation of the power system.

[0003] Among the traditional detection methods, there is the electromagnetic induction method. When current flows through the wire, a magnetic field is generated around it, and the leakage current will cause changes in the magnetic field. By detecting the changes in the magnetic field, it is possible to indirectly determine whether there is leakage in the wire. However, due to the complexity of high-voltage transmission lines, it is often difficult to adapt to various complex environments, resulting in affected detection accuracy and reliability. Secondly, traditional detection devices often have insufficient sensitivity when detecting tiny leakage currents, making it difficult to accurately determine leakage conditions. Summary of the invention

[0004] The purpose of the present invention is to provide a leakage detection device for high-voltage transmission lines to solve the problem in the above background technology that when detecting small leakage currents, there is often insufficient sensitivity and it is difficult to accurately judge the leakage situation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-voltage transmission line leakage detection device, comprising a magnetic core body and a wire body, the outer surface of the magnetic core body is provided with a plurality of main winding components for generating a magnetic field, the main winding components include a main magnetic pole installed on the outer surface of the magnetic core body, the wire body is installed inside the main magnetic pole, the outer surface of the main magnetic pole is wound with a plurality of coil groups, the outer surface of the main magnetic pole is provided with an adjustment mechanism, the adjustment mechanism includes a long plate installed on the outer surface of the magnetic core body, a second motor is fixedly installed on the bottom end of the long plate, an output shaft of the second motor is fixedly connected with a screw, the screw is provided with two threaded sleeves with opposite threads, the outer surface of the main magnetic pole is provided with a first soft plate and a second soft plate with a moving rod for isolating the magnetic field deviation, the two moving rods are fixedly connected with the two threaded sleeves respectively, and the inner walls of the first soft plate and the second soft plate are fixedly installed with a plurality of convex block components for adjusting the coil spacing.

[0006] As a preferred technical solution of the present invention, the bump assembly includes a bump body installed on the inner walls of the first soft board and the second soft board, the cross-section of the bump body is trapezoidal, the inner cavity of the bump body is added with activated carbon for adsorbing water vapor, the outer surface of the bump body is installed with a protective pad, and the outer surface of the bump body is provided with multiple air holes.

[0007] As a preferred technical solution of the present invention, the main magnetic pole is fixed to the outer surface of the magnetic core body by a top rod, and the main magnetic pole is composed of two semicircular magnetic pole plates. The inner wall of the main magnetic pole is installed with an annular detection frame for concentrating the magnetic field, and the inner wall of the annular detection frame is installed with multiple detection terminals for detecting leakage, and a damping member for suppressing oscillation and improving detection accuracy is arranged between the detection terminal and the annular detection frame.

[0008] As a preferred technical solution of the present invention, a reinforcing rib assembly is provided inside the main magnetic pole, and the reinforcing rib assembly includes an annular cavity opened inside the main magnetic pole, a partition is installed inside the annular cavity, and a plurality of metal pickup sheets for enhancing the magnetic field change are installed on the surface of the partition, and the metal pickup sheets are arranged between the coils inside the coil group.

[0009] As a preferred technical solution of the present invention, a magnetizing mechanism is provided on the outer surface of the magnetic core body, and the magnetizing mechanism includes a movable plate installed on the outer surface of the magnetic core body, an end plate is slidably installed on the outer surface of the movable plate, an annular support plate is provided on the top of the end plate, a secondary winding for increasing additional current is fixedly installed inside the annular support plate, an annular slide plate is fixedly installed on the outer surface of the annular support plate, and the annular slide plate is slidably installed inside the end plate.

[0010] As a preferred technical solution of the present invention, the coils on the surface of the secondary winding are arranged alternately with the coils on the outer surface of the main winding assembly, and the two secondary windings are symmetrically arranged at both ends of the main winding assembly.

[0011] As a preferred technical solution of the present invention, a plate-discharging mechanism is provided on the outer surface of the main magnetic pole, and the plate-discharging mechanism includes a fixed frame installed on the outer surface of the main magnetic pole, a support shaft is fixedly installed on the bottom end of the fixed frame, a round rod is rotatably installed inside the support shaft, a main gear is provided on the outer surface of the round rod, a plurality of grooves are provided on the outer surface of the annular skateboard, the main gear is meshed in the grooves, a second bevel gear is fixedly installed on the free end of the round rod, a third motor is fixedly installed on the top end of the fixed frame, a first bevel gear is fixedly installed on the output shaft of the third motor, the first bevel gear and the second bevel gear are meshed, and baffles for protecting the plate-discharging mechanism are fixedly installed on both sides of the fixed frame.

[0012] As a preferred technical solution of the present invention, an electric push rod is fixedly installed inside the fixed frame, and a limit plate for limiting the main gear is slidably installed on the surface of the round rod. The limit plate slides through the main gear, and the output shaft of the electric push rod located inside the round rod is fixedly connected to the limit plate.

[0013] As a preferred technical solution of the present invention, an elastic protective plate for protecting the main winding assembly and the secondary winding is installed on the outer surface of the magnetic core body, and the main winding assembly and the secondary winding are both arranged inside the elastic protective plate.

[0014] As a preferred technical solution of the present invention, a limiting mechanism is provided on the outer surface of the magnetic core body, and the limiting mechanism includes a support frame fixedly installed on the outer surface of the magnetic core body, and frames are fixedly installed at both ends of the support frame. A first roller and a second roller are rotatably installed inside the frame, and a belt is installed for transmission between the first roller and the second roller. A first motor is fixedly installed on the outer surface of the frame, and the output shaft of the first motor is fixedly connected to one end of the second roller, and the wire body is located between the first roller and the second roller.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention arranges a plurality of protrusion assemblies on the outer surface of the main winding assembly. These protrusions can be inserted between the coils to facilitate the adjustment of the spacing between the coils. This design enables the device to flexibly adjust the coil layout and optimize the electromagnetic induction area according to the characteristics and detection requirements of different power transmission lines, thereby further improving the detection accuracy and reliability.

[0017] 2. The present invention can accurately capture leakage signals in electric wires through the electromagnetic induction area formed by the main winding assembly and the secondary winding. The main winding generates an initial magnetic field, while the secondary winding is used to amplify the weak magnetic field changes caused by leakage, thereby improving the detection sensitivity. This design enables the device to accurately identify tiny leakage currents and reduce the leakage detection rate.

[0018] 3. The present invention can achieve precise adjustment of the angle and position of the secondary winding by setting up a plate arrangement mechanism and an adjustment mechanism. This design enables the secondary winding to adjust its position and angle relative to the main winding as needed, thereby maximizing the amplification of the leakage signal and improving the detection effect. At the same time, this also enhances the adaptability of the device to different environments and transmission lines.

[0019] 4. The present invention enhances the stability and strength of the structure by setting a reinforcing rib assembly inside the main magnetic pole. This design enables the device to withstand greater electromagnetic force and mechanical stress, improves durability and service life, and at the same time, the metal pickup sheet in the reinforcing rib assembly can also enhance the magnetic field change, further improving the detection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the elastic protection plate of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the limiting mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram of the combined structure of the first soft board and the second soft board of the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the bump assembly of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the main winding assembly of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the damping member of the present invention;

[0028] Fig. 9 It is a schematic diagram of the internal structure of the main magnetic pole of the present invention;

[0029] Fig.10 It is a schematic diagram of the internal structure of the elastic protective plate of the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the fixing frame of the present invention;

[0031] Fig.12 It is a schematic diagram of the secondary winding structure of the present invention;

[0032] Fig.13 It is a schematic diagram of the internal structure of the round rod of the present invention;

[0033] Fig.14 It is a schematic diagram of the structure of the annular slide plate of the present invention.

[0034] In the figure: 1, magnetic core body; 2, wire body; 3, limit mechanism; 31, frame; 32, first roller; 33, second roller; 34, first motor; 35, belt; 36, support frame; 4, main winding assembly; 41, main magnetic pole; 42, coil assembly; 43, annular detection frame; 44, damping member; 45, detection end; 46, reinforcing rib assembly; 461, annular cavity; 462, partition; 463, metal picking piece; 47, top rod; 5, adjustment mechanism; 51, long board; 52, second motor; 53, screw; 54, moving rod; 55, threaded sleeve ; 56. First soft board; 57. Second soft board; 58. Bump assembly; 581. Bump body; 582. Protective pad; 583. Air vent; 584. Activated carbon; 6. Magnetizing mechanism; 61. Secondary winding; 62. Annular support plate; 63. Annular slide plate; 64. End plate; 65. Moving plate; 7. Plate arrangement mechanism; 71. Fixed frame; 72. First bevel gear; 73. Third motor; 74. Second bevel gear; 75. Support shaft; 76. Main gear; 77. Limiting plate; 78. Round rod; 79. Electric push rod; 710. Baffle; 8. Elastic protective plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-14 The present invention provides a leakage detection device for a high-voltage transmission line, comprising a magnetic core body 1 and a wire body 2. The outer surface of the magnetic core body 1 is provided with a plurality of main winding components 4 for generating a magnetic field. The main winding components 4 include a main magnetic pole 41 installed on the outer surface of the magnetic core body 1. The wire body 2 is installed inside the main magnetic pole 41. The outer surface of the main magnetic pole 41 is wound with a plurality of coil groups 42.

[0037] Among them, the magnetic core body 1 serves as the core component of the magnetic field, concentrating and guiding the magnetic field to increase the magnetic induction intensity; the wire body 2 generates an alternating geomagnetic field when high-voltage electric energy is transmitted through the line; the wire body 2 can introduce the magnetic field generated by the line into the detection device and guide it to the main winding assembly 4; the main winding assembly 4 guides the induced current to the coil group 42 through a series of main magnetic poles 41 installed on the surface of the magnetic core body 1, thereby generating a larger induced current and increasing the strength of the leakage signal.

[0038] In the technical solution of the embodiment of the present application, an adjustment mechanism 5 is provided on the outer surface of the main magnetic pole 41, and the adjustment mechanism 5 includes a long plate 51 installed on the outer surface of the magnetic core body 1, and a second motor 52 is fixedly installed on the bottom end of the long plate 51, and the output shaft of the second motor 52 is fixedly connected with a screw 53, and the screw 53 is provided with two threaded sleeves 55 with opposite threads. The outer surface of the main magnetic pole 41 is provided with a first soft plate 56 and a second soft plate 57 with a moving rod 54 for isolating the magnetic field deviation, and the two moving rods 54 are fixedly connected to the two threaded sleeves 55 respectively, and the inner walls of the first soft plate 56 and the second soft plate 57 are fixedly installed with a plurality of protrusion assemblies 58 for adjusting the coil spacing.

[0039] Among them, by starting the second motor 52, the second motor 52 drives the screw 53 to rotate, and through the two opposite threads opened on the outer surface of the screw 53, the rotation of the screw 53 will drive the two threaded sleeves 55 to move in a direction approaching each other. At this time, the two threaded sleeves 55 respectively drive the first soft board 56 and the second soft board 57 to move, and when the first soft board 56 and the second soft board 57 approach each other, the bump assembly 58 mounted on the surface thereof will be moved, so that the bump assembly 58 moves to the coil on the surface of the main magnetic pole 41, so that the spacing of the coils can be adjusted, so that the device can flexibly adjust the coil layout according to the characteristics and detection requirements of different power transmission lines, optimize the electromagnetic induction area, and further improve the detection accuracy and reliability.

[0040] In other embodiments, the bump assembly 58 includes a bump body 581 installed on the inner walls of the first soft board 56 and the second soft board 57, the cross-section of the bump body 581 is trapezoidal, the inner cavity of the bump body 581 is added with activated carbon 584 for absorbing water vapor, the outer surface of the bump body 581 is installed with a protective pad 582, and the outer surface of the bump body 581 is provided with a plurality of air holes 583.

[0041] Among them, the activated carbon 584 inside the bump body 581 can absorb the water vapor inside the main magnetic pole 41, so as to ensure the dryness inside the main winding assembly 4. The adjustment of the coil spacing by the bump body 581 will change the inductance value and the distribution of the electromagnetic field of the coil, thereby affecting the effect of the filtering circuit, thereby reducing interference signals such as high-frequency noise; the protective pad 582 can also reduce the friction damage between the bump body 581 and the coil.

[0042] In other embodiments, the main magnetic pole 41 is fixed to the outer surface of the magnetic core body 1 by a top rod 47. The main magnetic pole 41 is composed of two semicircular magnetic pole plates. The inner wall of the main magnetic pole 41 is equipped with an annular detection frame 43 for concentrating the magnetic field. The inner wall of the annular detection frame 43 is equipped with multiple detection terminals 45 for detecting leakage, and a damping member 44 for suppressing oscillation and improving detection accuracy is arranged between the detection terminal 45 and the annular detection frame 43.

[0043] Among them, the semicircular main magnetic pole 41 can be easily disassembled and replaced; the annular detection frame 43 is installed on the inner wall of the main magnetic pole 41 to concentrate the magnetic field. Since the magnetic field lines always tend to form a closed loop, the annular detection frame 43 can more effectively capture and concentrate these magnetic field lines, thereby improving the detection sensitivity; when leakage occurs, the magnetic field generated by the leakage current will be concentrated by the annular detection frame 43 and guided to the detection terminal 45, thereby triggering the sensor to generate a signal to detect the current leakage; the damping member 44 is arranged between the detection terminal 45 and the annular detection frame 43 to suppress oscillation and improve detection accuracy.

[0044] In other embodiments, a reinforcing rib assembly 46 is provided inside the main magnetic pole 41, and the reinforcing rib assembly 46 includes an annular cavity 461 opened inside the main magnetic pole 41, and a partition 462 is installed inside the annular cavity 461. A plurality of metal pickup sheets 463 for enhancing the magnetic field change are installed on the surface of the partition 462, and the metal pickup sheets 463 are arranged between the coils inside the coil group 42.

[0045] Among them, the metal pickup piece 463 can more effectively capture the changes in the magnetic field generated by the transmitting coil. The ring-shaped multiple groups of metal pickup pieces 463 and the coil help to enhance the sensitivity of the detector; when the cable leaks electricity and enters the detection area, it will cause changes in the magnetic field. This change will be captured by the metal pickup piece 463 and the receiving coil, and converted into electrical signals for processing.

[0046] In other embodiments, a magnetizing mechanism 6 is provided on the outer surface of the magnetic core body 1, and the magnetizing mechanism 6 includes a movable plate 65 installed on the outer surface of the magnetic core body 1, and an end plate 64 is slidably installed on the outer surface of the movable plate 65, and an annular support plate 62 is provided on the top of the end plate 64, and a secondary winding 61 for increasing additional current is fixedly installed inside the annular support plate 62, and an annular slide plate 63 is fixedly installed on the outer surface of the annular support plate 62, and the annular slide plate 63 is slidably installed inside the end plate 64.

[0047] The main winding generates an initial magnetic field, while the secondary winding 61 is used to amplify the weak magnetic field changes caused by leakage, thereby improving the detection sensitivity. This design enables the device to accurately identify tiny leakage currents and reduce the leakage detection rate.

[0048] In other embodiments, the coils on the surface of the secondary winding 61 are arranged alternately with the coils on the outer surface of the main winding assembly 4 , and the two secondary windings 61 are symmetrically arranged at both ends of the main winding assembly 4 .

[0049] Among them, the staggered secondary windings 61 can make the secondary windings 61 and the coils on the outer surface of the main winding assembly 4 cooperate when the secondary windings 61 move, thereby improving the electromagnetic induction intensity and further enhancing the detection effect of small currents.

[0050] In other embodiments, a plate displacing mechanism 7 is provided on the outer surface of the main magnetic pole 41, and the plate displacing mechanism 7 includes a fixing frame 71 installed on the outer surface of the main magnetic pole 41, a support shaft 75 is fixedly installed on the bottom end of the fixing frame 71, a round rod 78 is rotatably installed inside the support shaft 75, a main gear 76 is provided on the outer surface of the round rod 78, a plurality of grooves are provided on the outer surface of the annular slide 63, the main gear 76 is meshed inside the grooves, a second bevel gear 74 is fixedly installed on the free end of the round rod 78, a third motor 73 is fixedly installed on the top end of the fixing frame 71, a first bevel gear 72 is fixedly installed on the output shaft of the third motor 73, the first bevel gear 72 and the second bevel gear 74 are meshed, and baffles 710 for protecting the plate displacing mechanism 7 are fixedly installed on both sides of the fixing frame 71.

[0051] Among them, by starting the third motor 73, the third motor 73 drives the first bevel gear 72 to rotate, the first bevel gear 72 drives the second bevel gear 74 to rotate, the second bevel gear 74 drives the round rod 78 to rotate, the round rod 78 drives the main gear 76 to rotate, and the main gear 76 rotates through the groove on the surface of the annular skateboard 63. The rotation of the annular skateboard 63 can drive the secondary winding 61 to rotate, so that the secondary winding 61 can adjust its position and angle relative to the main winding assembly 4 as needed, thereby maximizing the amplification of the leakage signal and improving the detection effect. At the same time, this also enhances the adaptability of the device to different environments and transmission lines.

[0052] In other embodiments, an electric push rod 79 is fixedly installed inside the fixed frame 71, and a limit plate 77 for limiting the main gear 76 is slidably installed on the surface of the round rod 78. The limit plate 77 slides through the main gear 76, and the output shaft of the electric push rod 79 located inside the round rod 78 is fixedly connected to the limit plate 77.

[0053] Among them, the electric push rod 79 can drive the limit plate 77 to move, the limit plate 77 drives the main gear 76 to move, and the main gear 76 pushes the secondary winding 61 to move, so that the coil on the surface of the secondary winding 61 contacts the coil on the surface of the main winding assembly 4, thereby increasing the density of the coil, so as to adapt to the current detection effect in different environments.

[0054] In other embodiments, an elastic protective plate 8 for protecting the main winding assembly 4 and the secondary winding 61 is installed on the outer surface of the magnetic core body 1 , and the main winding assembly 4 and the secondary winding 61 are both arranged inside the elastic protective plate 8 .

[0055] The elastic protection plate 8 can protect the main winding assembly 4 and the secondary winding 61 from damage.

[0056] In other embodiments, a limiting mechanism 3 is provided on the outer surface of the magnetic core body 1, and the limiting mechanism 3 includes a support frame 36 fixedly mounted on the outer surface of the magnetic core body 1, and frames 31 are fixedly mounted on both ends of the support frame 36, and a first roller 32 and a second roller 33 are rotatably mounted inside the frame 31, and a belt 35 is installed for transmission between the first roller 32 and the second roller 33, and a first motor 34 is fixedly mounted on the outer surface of the frame 31, and the output shaft of the first motor 34 is fixedly connected to one end of the second roller 33, and the wire body 2 is located between the first roller 32 and the second roller 33.

[0057] Among them, by starting the first motor 34, the first motor 34 drives the second roller 33 to rotate, and at the same time the first motor 34 drives the first roller 32 to rotate through the belt 35. At this time, the first roller 32 and the second roller 33 can conveniently support and limit the wire body 2 stably, and are equipped with a protection and limiting mechanism 3 to ensure the safety and stability of the operation.

[0058] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A leakage detection device for a high-voltage transmission line, comprising a magnetic core body (1) and a wire body (2), characterized in that: The outer surface of the magnetic core body (1) is provided with a plurality of main winding components (4) for generating a magnetic field, the main winding components (4) comprising a main magnetic pole (41) mounted on the outer surface of the magnetic core body (1), the electric wire body (2) being mounted inside the main magnetic pole (41), and the outer surface of the main magnetic pole (41) being wound with a plurality of coil groups (42); The outer surface of the main magnetic pole (41) is provided with an adjustment mechanism (5), and the adjustment mechanism (5) comprises a long plate (51) mounted on the outer surface of the magnetic core body (1), a second motor (52) is fixedly mounted on the bottom end of the long plate (51), an output shaft of the second motor (52) is fixedly connected with a screw rod (53), the screw rod (53) is provided with two threaded sleeves (55) with opposite threads, the outer surface of the main magnetic pole (41) is provided with a first soft plate (56) and a second soft plate (57) with a moving rod (54) for isolating magnetic field deviation, the two moving rods (54) are respectively fixedly connected with the two threaded sleeves (55), and the inner walls of the first soft plate (56) and the second soft plate (57) are fixedly mounted with a plurality of protrusion components (58) for adjusting the coil spacing.

2. A high voltage transmission line leakage detection device according to claim 1, characterized in that: The bump assembly (58) comprises a bump body (581) mounted on the inner walls of a first soft board (56) and a second soft board (57); the bump body (581) has a trapezoidal cross-section; the inner cavity of the bump body (581) is added with activated carbon (584) for absorbing water vapor; a protective pad (582) is mounted on the outer surface of the bump body (581); and a plurality of air holes (583) are provided on the outer surface of the bump body (581).

3. A high voltage transmission line leakage detection device according to claim 1, characterized in that: The main magnetic pole (41) is fixed to the outer surface of the magnetic core body (1) through a push rod (47); the main magnetic pole (41) is composed of two semicircular magnetic pole plates; an annular detection frame (43) for concentrating the magnetic field is installed on the inner wall of the main magnetic pole (41); a plurality of detection terminals (45) for detecting leakage are installed on the inner wall of the annular detection frame (43); and a damping member (44) for suppressing oscillation and improving detection accuracy is arranged between the detection terminal (45) and the annular detection frame (43).

4. A high voltage transmission line leakage detection device according to claim 3, characterized in that: A reinforcing rib assembly (46) is arranged inside the main magnetic pole (41), and the reinforcing rib assembly (46) includes an annular cavity (461) opened inside the main magnetic pole (41), and a partition (462) is installed inside the annular cavity (461), and a plurality of metal pickup sheets (463) for enhancing the magnetic field change are installed on the surface of the partition (462), and the metal pickup sheets (463) are arranged between the coils inside the coil group (42).

5. A high voltage transmission line leakage detection device according to claim 1, characterized in that: The outer surface of the magnetic core body (1) is provided with a magnetizing mechanism (6), and the magnetizing mechanism (6) comprises a movable plate (65) mounted on the outer surface of the magnetic core body (1), an end plate (64) is slidably mounted on the outer surface of the movable plate (65), an annular support plate (62) is arranged at the top end of the end plate (64), a secondary winding (61) for increasing additional current is fixedly mounted inside the annular support plate (62), and an annular slide plate (63) is fixedly mounted on the outer surface of the annular support plate (62), and the annular slide plate (63) is slidably mounted inside the end plate (64).

6. A high voltage transmission line leakage detection device according to claim 5, characterized in that: The coils on the surface of the secondary winding (61) are arranged alternately with the coils on the outer surface of the main winding component (4), and the two secondary windings (61) are symmetrically arranged at two ends of the main winding component (4).

7. A high voltage transmission line leakage detection device according to claim 5, characterized in that: The outer surface of the main magnetic pole (41) is provided with a plate arrangement mechanism (7), and the plate arrangement mechanism (7) comprises a fixing frame (71) mounted on the outer surface of the main magnetic pole (41), a support shaft (75) is fixedly mounted on the bottom end of the fixing frame (71), a round rod (78) is rotatably mounted inside the support shaft (75), a main gear (76) is arranged on the outer surface of the round rod (78), a plurality of grooves are provided on the outer surface of the annular slide plate (63), the main gear (76) is meshed inside the grooves, a second bevel gear (74) is fixedly mounted on the free end of the round rod (78), a third motor (73) is fixedly mounted on the top end of the fixing frame (71), a first bevel gear (72) is fixedly mounted on the output shaft of the third motor (73), the first bevel gear (72) and the second bevel gear (74) are meshed, and baffles (710) for protecting the plate arrangement mechanism (7) are fixedly mounted on both sides of the fixing frame (71).

8. A high voltage transmission line leakage detection device according to claim 7, characterized in that: An electric push rod (79) is fixedly installed inside the fixed frame (71), a limit plate (77) for limiting the position of the main gear (76) is slidably installed on the surface of the round rod (78), the limit plate (77) slides through the main gear (76), and the output shaft of the electric push rod (79) located inside the round rod (78) is fixedly connected to the limit plate (77).

9. A high voltage transmission line leakage detection device according to claim 1, characterized in that: An elastic protective plate (8) for protecting the main winding assembly (4) and the secondary winding (61) is installed on the outer surface of the magnetic core body (1); the main winding assembly (4) and the secondary winding (61) are both arranged inside the elastic protective plate (8).

10. A high voltage transmission line leakage detection device according to claim 1, characterized in that: A limiting mechanism (3) is arranged on the outer surface of the magnetic core body (1), and the limiting mechanism (3) comprises a support frame (36) fixedly mounted on the outer surface of the magnetic core body (1), frames (31) are fixedly mounted on both ends of the support frame (36), a first roller (32) and a second roller (33) are rotatably mounted inside the frame (31), a belt (35) is installed between the first roller (32) and the second roller (33), a first motor (34) is fixedly mounted on the outer surface of the frame (31), an output shaft of the first motor (34) is fixedly connected to one end of the second roller (33), and the electric wire body (2) is located between the first roller (32) and the second roller (33).

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