High-voltage cable oscillation partial discharge tester

Abstract

The utility model belongs to the technical field of cable oscillation partial discharge testing, and particularly relates to a high-voltage cable oscillation partial discharge tester which comprises a main body frame, the top end of the main body frame is fixedly connected with an oscillation host, and the top end of the oscillation host is in line connection with a capacitor fixedly connected with the top end of the main body frame. By arranging a pressing ring, a worker places a ground wire terminal in a ground wire frame, then a positioning spring drives a lifting block to vertically slide through self elastic force, the lifting block slides to drive two sets of first pore plates to synchronously move, the ground wire terminal is placed in the ground wire frame, and the ground wire terminal is placed in the ground wire frame. The lifting block slides to drive the connecting rod to rotate through the first pore plate, the connecting rod rotates to drive the pressing ring to vertically slide along the outer wall of the limiting column through the second pore plate, the pressing ring drives the ground wire terminal to be stably attached to the ground bar, stable installation operation of the ground wire terminal of the oscillation host and the capacitor is achieved, and the phenomenon that the ground wire terminal is disconnected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable oscillation partial discharge test technical field especially relates to a high pressure cable oscillation partial discharge tester. BACKGROUND

[0002] Cable oscillation wave detection technology is mainly used for crosslinked polyethylene power cable detection, and is an effective form of offline monitoring, which is based on LCR damping oscillation principle, on the basis of completing cable DC charging, forms damping oscillation voltage wave through built-in high voltage reactor, high voltage real-time solid state switch and test cable, and applies approximate power frequency sinusoidal voltage wave on the test cable, and excites discharge signal at potential defect of the cable.

[0003] For example, the patent with publication number CN217506029U discloses a kind of adjustable high-voltage cable partial discharge tester, and specifically relates to cable detection technology, including tester body, the lower end of the tester body is fixedly installed with telescopic leg in four corners, the lower end of the tester body is fixedly installed with base in middle part, the upper portion of the base is provided with through slot passing through its left and right ends, the inside of the through slot is slidably connected with horizontal plate, the left and right ends of the horizontal plate are extended to the outside of through slot and slidably connected with L-shaped slide plate, and the ends of the two L-shaped slide plates vertically close to each other are slidably connected with extrusion plate.The utility model discloses a kind of adjustable high-voltage cable partial discharge tester, control two L-shaped slide plates to slide outward, until over the side of table, extrusion plate moves upward under the action of first spring, and cooperate with the horizontal part of L-shaped slide plate, extrusion is fixed to table, so as to fix tester body on desktop.

[0004] The existing high-voltage cable oscillation partial discharge tester needs to connect the oscillation host with the ground row when in use, and the connection between the oscillation host and the ground row is unstable when connecting the line, which leads to large error of high-voltage cable oscillation partial discharge test.In view of this, we propose a kind of high-voltage cable oscillation partial discharge tester. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned technical problem, provides a kind of high-voltage cable oscillation partial discharge tester, avoids that the oscillation host is not stable with the ground row connection, leads to the problem of large error of high-voltage cable oscillation partial discharge test.

[0006] The utility model provides a high -voltage cable oscillation partial discharge tester, including main body frame, the top fixed connection of main body frame has the oscillation host computer, the top line of oscillation host computer is connected with the fixed connection of the capacitance of main body frame top, the output line of oscillation host computer is connected with cable interface, the top of main body frame is installed on the one side of oscillation host computer and has oscilloscope, the top edge fixed connection of main body frame has ground wire frame, the inner wall fixed connection of ground wire frame has the positioning spring, the top fixed connection of positioning spring has the lifting block, the top fixed connection of lifting block has the pressure bar, both ends of lifting block are all fixedly connected with first hole plate, the hole of first hole plate is movably connected with the connecting rod of the screw joint of ground wire frame inner wall, one end of connecting rod is movably connected with second hole plate, the outer wall fixed connection of second hole plate has the pressure ring, the inner wall of pressure ring is penetrated with the fixed connection of the limiting post of ground wire frame inner wall, the bottom fixed connection of limiting post has the ground row, the bottom of pressure ring is pasted with the ground wire terminal of the outer wall of ground row, one end of ground wire terminal is communicated with the outer wall of oscillation host computer and the outer wall of capacitance through the wire,

[0007] The transfer assembly is located inside the main frame and is used for transfer operation of the main frame.

[0008] Based on the above structure, the ground wire terminal is placed in the ground wire frame, then the positioning spring drives the lifting block to vertically slide through the elastic force, the lifting block sliding drives the synchronous movement of the two groups of first hole plates, so that the lifting block sliding drives the connecting rod to rotate through the first hole plate, the connecting rod rotating drives the pressure ring to vertically slide along the outer wall of the limiting post through the second hole plate, the pressure ring drives the stable lamination of the ground wire terminal and the ground row, realizing the stable installation operation of the ground wire terminal of the oscillation host computer and the capacitor, and avoiding the open circuit phenomenon of the ground wire terminal.

[0009] Preferably, the connecting rod and the ground wire frame constitute a rotating structure through the first hole plate, and the pressure ring, the connecting rod and the limiting post constitute a lifting structure through the second hole plate.

[0010] In this embodiment, the lifting block sliding drives the connecting rod to rotate through the first hole plate, and the connecting rod rotating drives the pressure ring to vertically slide along the outer wall of the limiting post through the second hole plate.

[0011] Preferably, the limiting post has a cross section in the shape of a cross, and the ground wire terminal has a "C" shape.

[0012] In this embodiment, the limiting post with the cross section in the shape of a cross is arranged, which is conducive to improving the stability of the pressure ring sliding, and the ground wire terminal with the "C" shape is arranged, which avoids the separation of the ground wire terminal from the ground row due to stress.

[0013] Preferably, the ground wire terminal and the ground row constitute a compression structure through the pressure ring.

[0014] In the embodiment, the compression ring drives the ground terminal to stably adhere to the ground row, realizes stable installation operation of the ground terminal of the oscillation host and the capacitor, and avoids the circuit breaking phenomenon of the ground terminal.

[0015] Preferably, the transfer assembly comprises:

[0016] The outer wall of the hand wheel is fixedly connected with a worm, the outer wall of the worm is engaged with a worm gear rotatably connected with the inner wall of the main body frame, the outer wall of the worm gear is fixedly connected with a rotating disc, the outer edge of the rotating disc is fixedly connected with a lifting guide column, the outer wall of the lifting guide column is movably connected with a lifting hole plate, the bottom end of the lifting hole plate is fixedly connected with a lifting bottom plate, the inner wall of the lifting bottom plate penetrates a limiting rod fixedly connected with the inner wall of the main body frame, and the bottom end of the lifting bottom plate is fixedly connected with a base.

[0017] In the embodiment, the staff moves the main body frame to the test area by the rollers, then rotates the hand wheel, the hand wheel rotates the rotating disc through the worm and the worm gear, the rotating disc rotates the lifting guide column synchronously, and then the lifting guide column rotates the lifting bottom plate along the outer wall of the limiting rod through the lifting hole plate, the lifting bottom plate slides the base to extend below the rollers, and then supports the main body frame.

[0018] Preferably, the lifting bottom plate forms a lifting structure between the lifting guide column, the lifting hole plate and the limiting rod.

[0019] In the embodiment, the rotating disc rotates the lifting guide column synchronously, and then the lifting guide column rotates the lifting bottom plate along the outer wall of the limiting rod through the lifting hole plate, realizing the control operation of the vertical sliding of the lifting bottom plate.

[0020] Preferably, the base has an inverted "T" shape.

[0021] In the embodiment, the inverted "T" shaped base is beneficial to improve the stability of the support of the main body frame.

[0022] The beneficial effects of the utility model are:

[0023] 1. By setting the compression ring, the staff places the ground terminal in the ground frame, then the positioning spring drives the lifting block to vertically slide through the self elastic force, the lifting block slides the two groups of first hole plates to move synchronously, so that the lifting block slides the connecting rod to rotate through the first hole plate, the connecting rod rotates the compression ring to vertically slide along the outer wall of the limiting column through the second hole plate, the compression ring drives the ground terminal to stably adhere to the ground row, realizes stable installation operation of the ground terminal of the oscillation host and the capacitor, and avoids the circuit breaking phenomenon of the ground terminal.

[0024] 2. By setting up a base, the staff can move the main frame to the test area by pushing the rollers. Then, the staff can turn the handwheel. The rotation of the handwheel drives the rotating disk to rotate through the worm gear and worm wheel. The rotation of the rotating disk drives the lifting guide column to rotate synchronously. In turn, the rotation of the lifting guide column drives the lifting base plate to slide vertically along the outer wall of the limit rod through the lifting hole plate. The sliding of the lifting base plate causes the base to extend to the bottom of the rollers, thereby supporting the main frame. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the grounding frame of this utility model;

[0028] Figure 4 This is a schematic diagram of the three-dimensional unfolded structure of the ground row and pressure ring of this utility model;

[0029] Figure 5 This is a schematic diagram of the base connection structure of this utility model.

[0030] The markings in the diagram are as follows:

[0031] 1. Main frame; 2. Oscillator host; 3. Capacitor; 4. Cable interface; 5. Oscilloscope; 6. Grounding frame; 7. Positioning spring; 8. Lifting block; 9. Pressure rod; 10. First perforated plate; 11. Connecting rod; 12. Second perforated plate; 13. Pressure ring; 14. Limiting post; 15. Ground bar; 16. Grounding terminal; 17. Handwheel; 18. Worm gear; 19. Worm wheel; 20. Rotary disk; 21. Lifting guide post; 22. Lifting perforated plate; 23. Lifting base plate; 24. Limiting rod; 25. Base; 26. Roller. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 - Figure 5 This application will be described in further detail.

[0033] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0034] The embodiment of the application discloses a high-voltage cable oscillation partial discharge tester, which comprises a main frame 1, the top end of the main frame 1 is fixedly connected with an oscillation host 2, the top end of the oscillation host 2 is connected with a capacitor 3 fixedly connected with the top end of the main frame 1 in a line, the output end of the oscillation host 2 is connected with a cable interface 4 in a line, the top end of the main frame 1 is provided with an oscilloscope 5 on one side of the oscillation host 2, the top end edge of the main frame 1 is fixedly connected with a ground wire frame 6, the inner wall of the ground wire frame 6 is fixedly connected with a positioning spring 7, the top end of the positioning spring 7 is fixedly connected with a lifting block 8, the top end of the lifting block 8 is fixedly connected with a pressing rod 9, the two ends of the lifting block 8 are both fixedly connected with a first hole plate 10, the hole of the first hole plate 10 is movably connected with a connecting rod 11 screwed with the inner wall of the ground wire frame 6, one end of the connecting rod 11 is movably connected with a second hole plate 12, the outer wall of the second hole plate 12 is fixedly connected with a pressing ring 13, the inner wall of the pressing ring 13 penetrates a limiting column 14 fixedly connected with the inner wall of the ground wire frame 6, the bottom end of the limiting column 14 is fixedly connected with a ground wire 15, the bottom end of the pressing ring 13 is attached with a ground wire terminal 16 attached with the outer wall of the ground wire 15, one end of the ground wire terminal 16 is connected with the outer wall of the oscillation host 2 and the outer wall of the capacitor 3 in a line.

[0035] The transfer assembly is located in the main frame 1 and is used for the transfer operation of the main frame 1.

[0036] Based on the above structure, the ground wire terminal 16 is placed in the ground wire frame 6, then the positioning spring 7 drives the lifting block 8 to vertically slide through the elastic force of the positioning spring 7, the lifting block 8 drives the two groups of first hole plates 10 to synchronously move through the sliding of the lifting block 8, so that the lifting block 8 drives the connecting rod 11 to rotate through the sliding of the lifting block 8 through the first hole plate 10, the connecting rod 11 drives the pressing ring 13 to vertically slide along the outer wall of the limiting column 14 through the rotation of the connecting rod 11 through the second hole plate 12, the pressing ring 13 drives the ground wire terminal 16 to stably attach with the ground wire 15, the stable installation operation of the ground wire terminal 16 of the oscillation host 2 and the capacitor 3 is realized, and the open circuit phenomenon of the ground wire terminal 16 is avoided.

[0037] In one of the embodiments, the connecting rod 11 and the ground wire frame 6 form a rotating structure through the first hole plate 10, and the pressing ring 13 and the limiting column 14 form a lifting structure through the connecting rod 11 and the second hole plate 12.

[0038] In the embodiment, the lifting block 8 drives the connecting rod 11 to rotate through the sliding of the lifting block 8 through the first hole plate 10, and the connecting rod 11 drives the pressing ring 13 to vertically slide along the outer wall of the limiting column 14 through the rotation of the connecting rod 11 through the second hole plate 12.

[0039] In one of the embodiments, the cross section of the limiting column 14 is in a cross shape, and the shape of the ground wire terminal 16 is in a "C" shape.

[0040] In the embodiment, the limiting column 14 with a cross-shaped cross section is arranged, which is beneficial to improve the stability of the sliding of the compression ring 13, and the "C"-shaped ground terminal 16 is arranged to avoid the disengagement of the ground terminal 16 from the ground row 15 due to stress.

[0041] In one of the embodiments, the ground terminal 16 forms a compression structure with the ground row 15 through the compression ring 13.

[0042] In the embodiment, the compression ring 13 drives the ground terminal 16 to stably adhere to the ground row 15, realizes the stable installation operation of the ground terminal 16 of the oscillation host 2 and the capacitor 3, and avoids the open circuit phenomenon of the ground terminal 16.

[0043] In one of the embodiments, the transfer assembly comprises:

[0044] The hand wheel 17 is rotatably connected to the outer wall of the main frame 1, the outer wall of the hand wheel 17 is fixedly connected with the worm 18, the outer wall of the worm 18 is engaged with the worm gear 19 rotatably connected to the inner wall of the main frame 1, the outer wall of the worm gear 19 is fixedly connected with the rotating disc 20, the outer wall edge of the rotating disc 20 is fixedly connected with the lifting guide column 21, the outer wall of the lifting guide column 21 is movably connected with the lifting hole plate 22, the bottom end of the lifting hole plate 22 is fixedly connected with the lifting bottom plate 23, the inner wall of the lifting bottom plate 23 penetrates the limiting rod 24 fixedly connected with the inner wall of the main frame 1, the bottom end of the lifting bottom plate 23 is fixedly connected with the base 25, and the bottom end edge of the main frame 1 is provided with the roller 26.

[0045] In the embodiment, the staff moves the main frame 1 to the test area by the roller 26, then rotates the hand wheel 17, the hand wheel 17 rotates to drive the rotating disc 20 to rotate through the worm 18 and the worm gear 19, the rotating disc 20 rotates to drive the lifting guide column 21 to rotate synchronously, and then the lifting guide column 21 rotates to drive the lifting bottom plate 23 to vertically slide along the outer wall of the limiting rod 24 through the lifting hole plate 22, the lifting bottom plate 23 slides to drive the base 25 to extend below the roller 26, and then the main frame 1 is supported.

[0046] In one of the embodiments, the lifting bottom plate 23 forms a lifting structure with the limiting rod 24 through the lifting guide column 21 and the lifting hole plate 22.

[0047] In the embodiment, the rotating disc 20 rotates to drive the lifting guide column 21 to rotate synchronously, and then the lifting guide column 21 rotates to drive the lifting bottom plate 23 to vertically slide along the outer wall of the limiting rod 24 through the lifting hole plate 22, so as to realize the control operation of the vertical sliding of the lifting bottom plate 23.

[0048] In one of the embodiments, the base 25 has an inverted "T"-shaped shape.

[0049] In this embodiment, by setting the inverted "T" shaped base 25, the stability of the main frame 1 is improved.

[0050] The high-voltage cable oscillation partial discharge tester of the embodiment is used, first, the staff pushes the main frame 1 to move to the test area through the roller 26, then the staff rotates the hand wheel 17, the hand wheel 17 rotates to drive the rotating disc 20 to rotate through the worm 18 and the worm wheel 19, the rotating disc 20 rotates to drive the lifting guide column 21 to rotate synchronously, and then the lifting guide column 21 rotates to drive the lifting bottom plate 23 to slide vertically along the outer wall of the limiting rod 24 through the lifting hole plate 22, the lifting bottom plate 23 slides to drive the base 25 to extend to the lower side of the roller 26, and then the main frame 1 is supported.

[0051] Then, the ground terminal 16 of the oscillation host 2 and the capacitor 3 is installed on the ground row 15, the staff places the ground terminal 16 in the ground line frame 6, then the positioning spring 7 drives the lifting block 8 to slide vertically through the self elastic force, the lifting block 8 slides to drive the two groups of first hole plates 10 to move synchronously, so that the lifting block 8 slides to drive the connecting rod 11 to rotate through the first hole plate 10, the connecting rod 11 rotates to drive the compression ring 13 to slide vertically along the outer wall of the limiting column 14 through the second hole plate 12, the compression ring 13 drives the ground terminal 16 to stably adhere to the ground row 15, realizing the stable installation operation of the ground terminal 16 of the oscillation host 2 and the capacitor 3, avoiding the open circuit phenomenon of the ground terminal 16.

[0052] Finally, the staff connects the high-voltage cable to the oscillation host 2 through the cable interface 4, and at the same time, the staff connects the mains to the oscillation host 2, the oscillation host 2 works on the high-voltage cable to generate oscillation wave, then the partial discharge pulse signal on the power cable is obtained through the oscilloscope 5, realizing the high-voltage cable oscillation partial discharge test operation.

[0053] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high voltage cable oscillating partial discharge tester characterized by, The utility model relates to a kind of oscilloscope, including: Main body frame (1), the top end fixed connection of the main body frame (1) is connected with oscillation host computer (2), the top end line connection of the oscillation host computer (2) is connected with the fixed connection of capacitors (3) with the top end of main body frame (1), the output end line connection of the oscillation host computer (2) is connected with cable interface (4), the top end of the main body frame (1) is installed oscilloscope (5) in the side of oscillation host computer (2), the top end edge fixed connection of the main body frame (1) is connected with ground wire frame (6), the inner wall fixed connection of the ground wire frame (6) is connected with positioning spring (7), the top end fixed connection of the positioning spring (7) is connected with lifting block (8), the top end fixed connection of the lifting block (8) is connected with pressure rod (9), the two ends of the lifting block (8) are both fixedly connected with first hole plate (10), the hole of the first hole plate (10) is movably connected with the screw connection of connecting rod (11) with the inner wall of ground wire frame (6), one end of the connecting rod (11) movably connected with second hole plate (12), the outer wall fixed connection of the second hole plate (12) is connected with pressure ring (13), the inner wall of the pressure ring (13) is penetrated with the fixed connection of limiting column (14) with the inner wall of ground wire frame (6), the bottom end fixed connection of the limiting column (14) is connected with ground wire (15), the bottom end of the pressure ring (13) is attached with ground wire terminal (16) with the outer wall of ground wire (15) is attached, one end of the ground wire terminal (16) is communicated with the outer wall of oscillation host computer (2) and the outer wall of capacitors (3) by wire; Transfer assembly, the transfer assembly is located in the inside of main body frame (1), and is used for the transfer operation of main body frame (1).

2. The high voltage cable oscillatory partial discharge tester of claim 1, wherein: The connecting rod (11) is rotatably connected between the first hole plate (10) and the ground wire frame (6), and the pressure ring (13) is movably connected between the connecting rod (11), the second hole plate (12) and the limiting column (14).

3. The high voltage cable oscillatory partial discharge tester of claim 1, wherein: The limiting column (14) has a cross-section in the shape of a cross, and the ground wire terminal (16) has a "C" shape.

4. The high voltage cable oscillatory partial discharge tester of claim 1, wherein: The ground wire terminal (16) is pressed between the pressure ring (13) and the ground wire (15).

5. The high voltage cable oscillatory partial discharge tester of claim 1, wherein: The transfer assembly includes: Hand wheel (17), the outer wall screw joint of the main body frame (1) is connected with hand wheel (17), the outer wall fixed connection of the hand wheel (17) is connected with worm (18), the outer wall of the worm (18) is engaged with the screw joint of worm gear (19) with the inner wall of main body frame (1), the outer wall fixed connection of the worm gear (19) is connected with rotary disc (20), the outer wall edge fixed connection of the rotary disc (20) is connected with lifting guide column (21), the outer wall movably connected with lifting hole plate (22) of the lifting guide column (21), the bottom end fixed connection of the lifting hole plate (22) is connected with lifting bottom plate (23), the inner wall penetration of the lifting bottom plate (23) is connected with the fixed connection of limiting rod (24) with the inner wall of main body frame (1), the bottom end fixed connection of the lifting bottom plate (23) is connected with base (25), the bottom end edge four corners of the main body frame (1) are all installed with gyro wheel (26).

6. The high voltage cable oscillatory partial discharge tester of claim 5, wherein: The lifting bottom plate (23) is connected with the limiting rod (24) through the lifting guide column (21) and the lifting hole plate (22) to form a lifting structure.

7. The high voltage cable oscillatory partial discharge tester of claim 5, wherein: The base (25) is in the shape of an inverted "T".

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