Handheld variable-pitch partial discharge tester

Abstract

The invention relates to the technical field of discharge testing, in particular to a handheld variable-pitch partial discharge tester which comprises a handle of a hollow structure, the upper end of the handle is movably connected with a fixing disc, the upper end face of the fixing disc is movably connected with a fixing rod, and the upper end of the fixing rod is movably connected with an extension rod. One end of the extension rod extends into the fixing rod of the hollow structure, a connecting seat is fixed to the top of the extension rod, an adjusting rod is movably connected to the connecting seat, a measuring probe is fixedly connected to the end, away from the connecting seat, of the adjusting rod, and a deflection assembly is arranged between the adjusting rod and the connecting seat. The handheld variable-pitch partial discharge tester is simple in structure and convenient to operate, angle adjustment and length adjustment of the handheld variable-pitch partial discharge tester are achieved through the traction steel wire rope, the transmission process is smooth, the production and manufacturing cost of the handheld variable-pitch partial discharge tester is reduced, and meanwhile damage to a transmission component caused by accidental collision of the handheld variable-pitch partial discharge tester can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of partial discharge testing, in particular to a handheld variable-distance partial discharge tester. Background Art

[0002] The partial discharge tester is a test instrument specially used to detect partial discharge phenomena in high-voltage equipment. Its key role is to detect the insulation status of power equipment and prevent insulation failure, thereby ensuring the safe operation of power equipment. In the discharge detection process of substations, the partial discharge tester plays an irreplaceable role and is one of the important means of preventive testing.

[0003] However, since some equipment in the substation is located at a high position or has narrow gaps, the staff often face many difficulties during the measurement process. In order to solve these problems, the staff introduced a partial discharge tester extension rod. This device fixes the measuring probe of the partial discharge tester on a fixing clamp and uses the extension effect of the rod body, so that the staff does not need to frequently climb or cross the protective railings. They only need to hold the extension rod to measure at high equipment or narrow gaps, which greatly improves work efficiency and reduces potential safety hazards. For example, the invention with announcement number CN118534162B specifically discloses a handheld variable-distance partial discharge tester;

[0004] First of all, the device has a complex structure, most of which is exposed to the outside of the rod body. During actual use, especially when the device is carried around, it is very easy for the rod body to collide with foreign objects or fall off, causing damage to the device. The internal component structure cannot complete the transmission, causing transmission obstruction, jamming, etc. In particular, the gear meshing structure disclosed in the device greatly reduces the service life of the device.

[0005] Therefore, a handheld variable-distance partial discharge tester is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a handheld variable-pitch partial discharge tester. The handheld variable-pitch partial discharge tester disclosed in the present application has a simple structure and is easy to operate. The angle adjustment and length adjustment of the device are achieved by pulling a steel wire rope. Not only is the transmission process smooth, reducing the manufacturing cost of the device, but it can also reduce the damage to the transmission components caused by accidental collisions of the device. In order to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a handheld variable-distance partial discharge tester, comprising a handle of a hollow structure, the upper end of the handle is movably connected to a fixed disk, the upper end surface of the fixed disk is movably connected to a fixed rod, and the upper end of the fixed rod is movably connected to an extension rod, one end of the extension rod extends to the inside of the fixed rod of the hollow structure, a connecting seat is fixed to the top of the extension rod, an adjusting rod is movably connected to the connecting seat, and a measuring probe is fixedly connected to one end of the adjusting rod away from the connecting seat, and a deflection assembly is arranged between the adjusting rod and the connecting seat;

[0008] The deflection assembly includes a rotating shaft that passes through and rotatably connects the connecting seat. The bottom of the adjusting rod is fixed to the rotating shaft, and a steel wire rope is fixed to the middle position of the outer side of the rotating shaft. The other end of the steel wire rope extends into the handle through the extension rod and the fixing rod.

[0009] Preferably, an axle is fixed at both ends of the rotating shaft, and both ends of the axle pass through the connecting seat and extend to the outside of the connecting seat. A coil spring is sleeved on the surface of the axle on both sides of the outside of the connecting seat, and one end of the coil spring is fixed to the axle, and the other end is fixed to the connecting seat.

[0010] Preferably, sliders are fixed on both sides of the interior of the fixing rod, and sliding grooves matching with the sliders are provided on both sides of the exterior of the extension rod at positions corresponding to the sliders, and the sliders are slidably connected inside the sliding grooves.

[0011] Preferably, an adjustment plate is fixed to the inner bottom end of the extension rod, an external threaded barrel is threadedly connected to the inner center position of the adjustment plate, the bottom of the external threaded barrel extends into the handle through the fixed plate, and one end of the wire rope passes through the inside of the external threaded barrel.

[0012] Preferably, an adjusting disk is embedded and rotatably connected on the upper side of the fixed disk, the bottom of the fixed rod is fixed to the adjusting disk, an electromagnet three is arranged between the adjusting disk and the fixed disk, and the electromagnet three is embedded and connected to the inner wall of the fixed disk and magnetically attracts the adjusting disk.

[0013] Preferably, a turntable is rotatably connected to the interior of the fixed disk and located below the adjusting disk, the lower end surface of the turntable does not contact the handle, and the exterior of the handle is fixed to the edge of the fixed disk via a connecting piece.

[0014] Preferably, the lower end surface of the turntable is provided with shifting teeth distributed in an annular manner at equal intervals, and the external threaded barrel penetrates the adjustment disk and the turntable and extends into the handle.

[0015] Preferably, an electromagnetic ring is provided between the externally threaded barrel and the turntable, the electromagnetic ring is fixedly connected to the turntable, and the electromagnetic ring is magnetically fixed to the externally threaded barrel.

[0016] Preferably, the upper end surface of the turntable is embedded with a second electromagnet, and the second electromagnet is fixed to the adjustment disk by magnetic attraction.

[0017] Preferably, the surface of the handle is rotatably connected to a wave wheel, half of the wave wheel is exposed on the outer surface of the handle, the outer surface of the wave wheel is provided with a winding groove of an annular structure, the other end of the wire rope is fixed to the surface of the winding groove via an external threaded tube, an electromagnet is built in at the rotatable connection between the two ends of the wave wheel and the handle, the electromagnet is fixed to the handle, and a battery and a control chip are built in the handle at the lower side of the wave wheel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The handheld variable-pitch partial discharge tester disclosed in the present application has a simple structure and is easy to operate. The angle and length of the device are adjusted by pulling the wire rope, which not only makes the transmission process smooth and reduces the manufacturing cost of the device, but also reduces the damage to the transmission components caused by accidental collision of the device;

[0020] 2. In actual use, the present application can realize the adjustment of the deflection angle of the measuring probe, the circumferential rotation axis angle and the overall length of the device, so as to meet the discharge test work of the user in various environments and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is the overall structural view of the present invention;

[0023] Figure 2 It is a side view of the overall structure of the present invention;

[0024] Figure 3 It is a bottom view of the overall structure of the present invention;

[0025] Figure 4 It is a structural cross-sectional view of the handle and the fixing plate of the present invention;

[0026] Figure 5 It is a structural view of the fixing rod and the extension rod of the present invention;

[0027] Figure 6 It is a structural view of the adjusting rod and the connecting seat of the present invention;

[0028] Figure 7 It is a structural cross-sectional view of the connecting seat and the adjusting rod of the present invention.

[0029] Description of reference numerals:

[0030] 1. Handle; 2. Fluctuating wheel; 3. Fixed plate; 4. Extension rod; 5. Connecting seat; 6. Adjusting rod; 7. Measuring probe; 8. Fixed rod; 9. Electromagnet 1; 10. Winding groove; 11. Storage battery; 12. Wire rope; 13. External threaded barrel; 14. Toggle teeth; 15. Turntable; 16. Electromagnet 2; 17. Adjusting plate; 18. Electromagnet 3; 19. Slide groove; 20. Sliding block; 21. Adjusting plate; 22. Rotating shaft; 23. Winding spring; 24. Shaft; 25. Electromagnet ring. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figures 1 to 7 , the present invention provides a technical solution:

[0033] A handheld variable-distance partial discharge tester, comprising a handle 1 of a hollow structure, wherein the upper end of the handle 1 is movably connected to a fixed disk 3, and the upper end surface of the fixed disk 3 is movably connected to a fixed rod 8, and the upper end of the fixed rod 8 is movably connected to an extension rod 4, one end of the extension rod 4 extends to the inside of the fixed rod 8 of the hollow structure, a connecting seat 5 is fixed to the top of the extension rod 4, an adjusting rod 6 is movably connected to the connecting seat 5, and a measuring probe 7 is fixedly connected to the end of the adjusting rod 6 away from the connecting seat 5, and a deflection assembly is provided between the adjusting rod 6 and the connecting seat 5;

[0034] The deflection assembly includes a rotating shaft 22 that passes through and rotatably connects to the connecting seat 5, the bottom of the adjusting rod 6 is fixed to the rotating shaft 22, and a steel wire rope 12 is fixed to the middle position outside the rotating shaft 22, and the other end of the steel wire rope 12 extends into the handle 1 through the extension rod 4 and the fixing rod 8, and shaft rods 24 are fixed to both ends of the rotating shaft 22, and both ends of the shaft rod 24 pass through the connecting seat 5 and extend to both sides outside the connecting seat 5, and coil springs 23 are sleeved on the surfaces of the shaft rod 24 located on both sides outside the connecting seat 5, and one end of the coil spring 23 is fixed to the shaft rod 24, and the other end is fixed to the connecting seat 5.

[0035] By adopting the above technical solution, when it is necessary to adjust the angle of the measuring probe 7 during subsequent use, the user rotates the wave wheel 2 in the opposite direction to pull and reel in the wire rope 12, and the wire rope 12 wound on the rotating shaft 22 is pulled to drive the rotating shaft 22 to rotate, thereby driving the adjusting rod 6 fixed to the rotating shaft 22 to deflect on the connecting seat 5, and the deflection angle is determined according to the angle at which the user dials the wave wheel 2. During the rotation of the rotating shaft 22, the winding spring 23 will accumulate elastic potential, and then the user controls the electromagnet-9 electromagnetically attracting the wave wheel 2 through the control chip to limit the angle of the wave wheel 2, thereby limiting the angle of the adjusting rod 6 and the measuring probe 7, and completing the adjustment of the angle of the measuring probe 7.

[0036] Specifically, sliders 20 are fixed on both sides of the interior of the fixed rod 8, and sliding grooves 19 matching the sliders 20 are opened on both sides of the exterior of the extension rod 4 at positions corresponding to the sliders 20. The slider 20 is located in the sliding grooves 19 and is slidably connected. An adjustment plate 21 is fixed to the inner bottom end of the extension rod 4, and an externally threaded barrel 13 is threadedly connected to the inner center position of the adjustment plate 21. The bottom of the externally threaded barrel 13 extends to the handle 1 through the fixed disk 3, and one end of the wire rope 12 passes through the inner part of the externally threaded barrel 13.

[0037] By adopting the above technical solution, when working, the user first needs to adjust the length of the present application according to the position to be measured, mainly to adjust the common length between the fixed rod 8 and the extension rod 4. At this time, the user controls the electromagnetic ring 25 to conduct electricity and generate magnetic force through the control chip, so that the turntable 15 is magnetically fixed to the external threaded tube 13 through the electromagnetic ring 25. Then the user holds the handle 1, and the thumb presses the toggle tooth 14 to rotate clockwise, driving the turntable 15 to rotate clockwise, and then the electromagnetic ring 25 magnetically attracts the external threaded tube 13, driving the external threaded tube 13 to rotate magnetically together. At this time, the external threaded tube 13 rotates, and the adjustment plate 21 threadedly connected to the external threaded tube 13 and fixed to the extension rod 4 moves upward. At this time, the extension rod 4 located in the fixed rod 8 moves upward under the sliding connection and guidance of the slider 20 and the slide groove 19, thereby driving the measuring probe 7 to move upward, thereby realizing the common length adjustment of the device;

[0038] During the length adjustment process, the electromagnets 9 located on both sides of the wave wheel 2 are in a power-off state, and when the common length of the wire rope 12 increases, its own length also needs to match. Therefore, the wire rope 12 wound on the wave wheel 2 will also pull the wave wheel 2 to rotate, so that the wire rope 12 wound on the wave wheel 2 is loosened to meet the need of changing the length of the device.

[0039] Specifically, an adjusting disk 17 is embedded and rotatably connected on the upper side of the fixed disk 3, and the bottom of the fixed rod 8 is fixed to the adjusting disk 17. An electromagnet 3 18 is arranged between the adjusting disk 17 and the fixed disk 3. The electromagnet 3 18 is embedded and connected to the inner wall of the fixed disk 3 and magnetically attracts the adjusting disk 17. The interior of the fixed disk 3 is located at the lower side of the adjusting disk 17 and is rotatably connected with a turntable 15. The lower end surface of the turntable 15 does not contact the handle 1, and the outside of the handle 1 is fixed to the edge of the fixed disk 3 through a connecting piece. The lower end surface of the turntable 15 is annularly and equidistantly distributed with toggling teeth 14. The external threaded barrel 13 passes through the adjusting disk 17 and the turntable 15 and extends into the handle 1. An electromagnetic ring is arranged between the external threaded barrel 13 and the turntable 15. 25, the electromagnetic ring 25 is fixedly connected to the turntable 15, the electromagnetic ring 25 is magnetically fixed to the external threaded tube 13, the upper end surface of the turntable 15 is embedded with an electromagnet 2 16, the electromagnet 2 16 is magnetically fixed to the adjustment disk 17, the surface of the handle 1 is rotatably connected with a wave wheel 2, one half of the wave wheel 2 is exposed on the outer surface of the handle 1, the outer surface of the wave wheel 2 is provided with a ring-shaped rewinding groove 10, the other end of the wire rope 12 is fixed to the surface of the rewinding groove 10 through the external threaded tube 13, the two ends of the wave wheel 2 are rotatably connected to the handle 1 with an electromagnet 9 built in, the electromagnet 9 is fixed to the handle 1, and the handle 1 has a built-in battery 11 and a control chip located at the lower side of the wave wheel 2.

[0040] By adopting the above technical solution, in the subsequent use process, the user needs to adjust the position of the measuring probe 7 after deflection. At this time, the user controls the electromagnetic ring 25 to cut off the power, the electromagnet 2 16 to conduct, and the electromagnet 3 18 to cut off the power. The turntable 15 is also driven by toggling the toggle teeth 14 to drive the adjustment disk 17 to rotate, thereby driving the fixed rod 8, the extension rod 4, and the measurement probe 7. The circumferential angle adjustment. After the adjustment is completed, the electromagnet 2 16 is cut off, and the electromagnet 3 18 is conductive to control the adjustment disk 17 and the fixed disk 3 to be magnetically fixed, so as to limit and fix the angle after the rotation.

[0041] Working principle: When working, the user first needs to adjust the length of this application according to the position to be measured, mainly to adjust the common length between the fixed rod 8 and the extension rod 4. At this time, the user controls the electromagnetic ring 25 to conduct electricity and generate magnetic force through the control chip, so that the turntable 15 is magnetically fixed to the external threaded tube 13 through the electromagnetic ring 25. Then the user holds the handle 1, and the thumb presses the toggle tooth 14 to rotate clockwise, driving the turntable 15 to rotate clockwise, and then the electromagnetic ring 25 magnetically attracts the external threaded tube 13, driving the external threaded tube 13 to rotate magnetically together. At this time, the external threaded tube 13 rotates, and the adjustment plate 21 threadedly connected to the external threaded tube 13 and fixed to the extension rod 4 moves upward. At this time, the extension rod 4 located in the fixed rod 8 moves upward under the sliding connection and guidance of the slider 20 and the slide groove 19, thereby driving the measuring probe 7 to move upward, thereby realizing the common length adjustment of the device;

[0042] During the length adjustment process, the electromagnets 9 located on both sides of the wave wheel 2 are in a power-off state, and when the common length of the wire rope 12 increases, its own length also needs to match, so the wire rope 12 wound on the wave wheel 2 will also pull the wave wheel 2 to rotate, so that the wire rope 12 wound on the wave wheel 2 is loosened to meet the needs of changing the length of the device;

[0043] When the angle of the measuring probe 7 needs to be adjusted during subsequent use, the user rotates the wave wheel 2 in the opposite direction to pull and reel in the steel wire rope 12, and the steel wire rope 12 wound on the rotating shaft 22 is pulled to drive the rotating shaft 22 to rotate, thereby driving the adjusting rod 6 fixed to the rotating shaft 22 to deflect on the connecting seat 5, and the deflection angle is determined according to the angle at which the user dials the wave wheel 2. During the rotation of the rotating shaft 22, the winding spring 23 will be elastically stored, and then the user controls the electromagnet-9 electromagnetically attracting the wave wheel 2 through the control chip to limit the angle of the wave wheel 2, thereby limiting the angle of the adjusting rod 6 and the measuring probe 7, and completing the adjustment of the angle of the measuring probe 7;

[0044] Later, during the subsequent use, the user needs to adjust the position of the measuring probe 7 after deflection. At this time, the user controls the electromagnetic ring 25 to cut off the power, the electromagnet 2 16 to conduct, and the electromagnet 3 18 to cut off the power. The turntable 15 is also driven by toggling the toggle teeth 14 to drive the adjustment disk 17 to rotate, thereby driving the fixed rod 8, the extension rod 4, and the measuring probe 7 to adjust the circumferential angle. After the adjustment is completed, the electromagnet 2 16 is cut off, and the electromagnet 3 18 is conductive to control the adjustment disk 17 to be magnetically fixed to the fixed disk 3, so as to limit and fix the angle after the rotation.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A handheld variable-distance partial discharge tester, comprising a handle (1) with a hollow structure, characterized in that: The upper end of the handle (1) is movably connected to a fixed plate (3), and the upper end surface of the fixed plate (3) is movably connected to a fixed rod (8), and the upper end of the fixed rod (8) is movably connected to an extension rod (4), one end of the extension rod (4) extends into the interior of the fixed rod (8) of the hollow structure, a connecting seat (5) is fixed to the top of the extension rod (4), an adjusting rod (6) is movably connected to the connecting seat (5), and one end of the adjusting rod (6) away from the connecting seat (5) is fixedly connected to a measuring probe (7), and a deflection assembly is provided between the adjusting rod (6) and the connecting seat (5); The deflection assembly comprises a rotating shaft (22) which passes through and is rotatably connected to the connecting seat (5), the bottom of the adjusting rod (6) is fixed to the rotating shaft (22), and a steel wire rope (12) is fixed to the middle position outside the rotating shaft (22), and the other end of the steel wire rope (12) extends into the handle (1) through the extension rod (4) and the fixing rod (8).

2. A handheld variable-distance partial discharge tester according to claim 1, characterized in that: A shaft (24) is fixed at both ends of the rotating shaft (22), and both ends of the shaft (24) penetrate the connecting seat (5) and extend to the two sides outside the connecting seat (5), and a coil spring (23) is sleeved on the surface of the shaft (24) located on the two sides outside the connecting seat (5), and one end of the coil spring (23) is fixed to the shaft (24), and the other end is fixed to the connecting seat (5).

3. A handheld variable-distance partial discharge tester according to claim 2, characterized in that: Slide blocks (20) are fixed on both sides of the interior of the fixed rod (8), and slide grooves (19) matching with the slide blocks (20) are provided on both sides of the exterior of the extension rod (4) at positions corresponding to the slide blocks (20), and the slide blocks (20) are slidably connected inside the slide grooves (19).

4. A handheld variable-distance partial discharge tester according to claim 3, characterized in that: An adjustment plate (21) is fixed to the inner bottom end of the extension rod (4), an external threaded barrel (13) is threadedly connected to the inner center position of the adjustment plate (21), the bottom of the external threaded barrel (13) extends to the inside of the handle (1) through the fixed plate (3), and one end of the steel wire rope (12) passes through the inside of the external threaded barrel (13).

5. A handheld variable-distance partial discharge tester according to claim 4, characterized in that: An adjusting disk (17) is embedded and rotatably connected on the upper side of the fixing disk (3), the bottom of the fixing rod (8) is fixed to the adjusting disk (17), and an electromagnet (18) is arranged between the adjusting disk (17) and the fixing disk (3). The electromagnet (18) is embedded and connected to the inner wall of the fixing disk (3) and magnetically attracts the adjusting disk (17).

6. A handheld variable-distance partial discharge tester according to claim 5, characterized in that: The interior of the fixed disk (3) is located below the adjusting disk (17) and is rotatably connected to a rotating disk (15); the lower end surface of the rotating disk (15) does not contact the handle (1), and the outside of the handle (1) is fixed to the edge of the fixed disk (3) via a connecting piece.

7. A handheld variable-distance partial discharge tester according to claim 6, characterized in that: The lower end surface of the rotating disk (15) is provided with a ring of equidistantly distributed shifting teeth (14), and the external threaded tube (13) penetrates the adjusting disk (17) and the rotating disk (15) and extends into the handle (1).

8. The handheld variable-distance partial discharge tester according to claim 7, characterized in that: An electromagnetic ring (25) is provided between the externally threaded barrel (13) and the rotating disk (15); the electromagnetic ring (25) is fixedly connected to the rotating disk (15); and the electromagnetic ring (25) is fixedly attached to the externally threaded barrel (13) by magnetic attraction.

9. The handheld variable-distance partial discharge tester according to claim 8, characterized in that: The upper end surface of the rotating disk (15) is embedded with a second electromagnet (16), and the second electromagnet (16) is fixed to the adjusting disk (17) by magnetic attraction.

10. The handheld variable-distance partial discharge tester according to claim 9, characterized in that: The surface of the handle (1) is rotatably connected to a wave wheel (2), one half of the wave wheel (2) is exposed on the outer surface of the handle (1), the outer surface of the wave wheel (2) is provided with a reeling groove (10) of an annular structure, the other end of the steel wire rope (12) is fixed to the surface of the reeling groove (10) via an external threaded tube (13), an electromagnet (9) is built-in at the rotational connection between the two ends of the wave wheel (2) and the handle (1), the electromagnet (9) is fixed to the handle (1), and a storage battery (11) and a control chip are built-in inside the handle (1) and located at the lower side of the wave wheel (2).

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