Power distribution network short circuit grounding fault indicator

Abstract

The utility model relates to a power distribution network short circuit grounding fault indicator comprising a fault indicator body, the upper surface of the fault indicator body is provided with a cable groove, the side wall of the fault indicator body is rotatably connected with a U-shaped hook, and the rotation direction of the U-shaped hook is consistent with the direction of the central axis of the cable groove. The top of the U-shaped hook is in threaded connection with a threaded rod, the bottom of the threaded rod is provided with an arc-shaped pressing plate, the arc-shaped pressing plate is lowered by rotating the threaded rod to be matched with the cable groove to press the cable, sliding between the cable and the indicator body can be avoided, and then dislocation between the indicator and the cable and influence on monitoring accuracy are avoided.

Description

Technical Field

[0001] The utility model relates to a distribution network short-circuit grounding fault indicator, belonging to the technical field of fault indicators. Background Art

[0002] A fault indicator is a device installed on power lines (overhead lines, cables and busbars) to indicate fault current. Most fault indicators can only identify and indicate short-circuit faults by detecting the characteristics of short-circuit current. During the operation of the distribution network, a fault indicator is required to monitor the short-circuit grounding of the lines on the power grid.

[0003] When the existing fault indicator is in use, the connection position between the indicator body and the cable lacks an effective anti-slip structure, which makes it easy for the cable and the indicator body to slide, thereby causing the indicator and the cable to be misaligned, affecting the monitoring accuracy. At the same time, the connection between the existing indicator and the cable only relies on a coil spring clamp connection, and the cable can easily cause the indicator to fall off and be damaged during shaking. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a distribution network short-circuit grounding fault indicator, which can avoid sliding between the cable and the indicator body, and further avoid misalignment between the indicator and the cable, which affects the monitoring accuracy.

[0005] The technical solution of the utility model is as follows:

[0006] A short-circuit grounding fault indicator for a distribution network comprises a fault indicator body, wherein a cable trough is arranged on the upper surface of the fault indicator body, a U-shaped hook is rotatably connected to the side wall of the fault indicator body, the rotation direction of the U-shaped hook is consistent with the direction of the central axis of the cable trough, a threaded rod is threadedly connected to the top of the U-shaped hook, an arc-shaped pressure plate is arranged at the bottom of the threaded rod, and the arc-shaped pressure plate is lowered by rotating the threaded rod to cooperate with the cable trough to press the cable tightly.

[0007] Among them, an adjustment device is provided on the side of the arc pressure plate facing the cable trough, and the adjustment device includes a plurality of arc sheets and a plurality of elastic silicones, and the plurality of arc sheets and the plurality of elastic silicones are staggered and connected to form an arc surface, and the outer arc surfaces of the arc surfaces are respectively matched with the inner arc surfaces of the arc pressure plate, and a plurality of springs are fixedly connected between the arc surface and the arc pressure plate.

[0008] Wherein, a rotating knob is arranged at one end of the threaded rod away from the cable trough, and an anti-slip convex pattern is arranged on the outer ring side of the rotating knob.

[0009] Wherein, the cable trough is provided with anti-slip ribs.

[0010] Wherein, an electromagnetic warning sign is arranged on the lower surface of the fault indicator body.

[0011] Wherein, both side walls of the fault indicator body are provided with fixing buttons, and both ends of the U-shaped hook are provided with rotating holes, and the U-shaped hook is rotatably connected to the fixing button through the rotating holes; an anti-wear ring is provided in the rotating holes.

[0012] The utility model has the following beneficial effects:

[0013] The utility model provides a cable groove and anti-skid ribs, so that the connection position between the indicator body and the cable is anti-skid connected through the anti-skid ribs, avoiding sliding and misalignment between the cable and the indicator body, ensuring monitoring accuracy, and effectively solving the problems in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the structure of the utility model (the adjustment device is not drawn);

[0015] Figure 2 It is a schematic diagram of the structure of the fault indicator body in the utility model when viewed from above;

[0016] Figure 3 It is a side view structural diagram of the U-shaped hook in the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the regulating device in the utility model.

[0018] The reference numerals in the figure represent:

[0019] 1. U-shaped hook; 2. Fault indicator body; 3. Arc-shaped pressure plate; 4. Threaded rod; 5. Turn knob; 6. Cable trough; 7. Fixing button; 8. Electromagnetic warning sign; 9. Rotating hole; 10. Anti-wear ring; 12. Anti-slip rib; 31. Arc-shaped sheet; 32. Elastic silicone; 33. Arc-shaped surface; 34. Spring. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figures 1 to 4 , the utility model provides a technical solution:

[0022] A short-circuit grounding fault indicator for a distribution network comprises a fault indicator body 2, wherein a cable trough 6 is arranged on the upper surface of the fault indicator body 2, and anti-skid convex ribs 12 are arranged on the cable trough 6. The anti-skid convex ribs 12 on the cable trough 6 can perform anti-skid treatment on the cable to avoid the misalignment between the cable and the fault indicator body 2 affecting the monitoring; a U-shaped hook 1 is rotatably connected to the side wall of the fault indicator body 2, and the rotation direction of the U-shaped hook 1 is consistent with the direction of the central axis of the cable trough 6; a threaded rod 4 is threadedly connected to the top of the U-shaped hook 1, and an arc-shaped pressing plate 3 is arranged at the bottom of the threaded rod 4, and the arc-shaped pressing plate 3 is driven to move up and down by rotating the threaded rod 4, and the arc-shaped pressing plate 3 is matched with the cable trough 6 to form a space for accommodating the cable; the arc-shaped pressing plate 3 is moved close to the cable trough 6 by rotating the threaded rod 4, and then the cable placed on the cable trough 6 is pressed tightly to avoid the misalignment between the fault indicator body 2 and the cable, which affects the monitoring accuracy; an electromagnetic warning sign 8 is arranged on the lower surface of the fault indicator body 2.

[0023] As a preferred embodiment, the arc-shaped pressing plate 3 is provided with an adjustment device on the side facing the cable trough 6, and the adjustment device includes a plurality of arc-shaped sheets 31 and a plurality of elastic silicone rubbers 32, and the plurality of arc-shaped sheets 31 and the plurality of elastic silicone rubbers 32 are staggered and connected to form an arc-shaped surface 33, and the outer arc surfaces of the arc-shaped surface 33 are respectively matched with the inner arc surfaces of the arc-shaped pressing plate 3, and a plurality of springs 34 are fixedly connected between the arc-shaped surface 33 and the arc-shaped pressing plate 3;

[0024] Specifically, when a larger cable is placed, the initial size of the curved surface 33 cannot match the larger cable, or a stronger cable compression effect is required. At this time, when the opposing cable trough 6 and the curved pressure plate 3 are in contact with each other, the curved surface 33 will be subjected to pressure toward the curved pressure plate 3 to expand the internal capacity, and the elastic silicone 32 will be stretched and expanded under pressure, so that the curved surface 33 can maintain the original curvature and expand. Again, after the curved surface 33 is expanded, the spring 34 will act as an elastic force on the curved surface 33, so as to clamp the cable placed on the curved surface 33 and the center of the cable trough 6.

[0025] Furthermore, a rotating knob 5 is provided at one end of the threaded rod 4 away from the cable groove 6 , and an anti-slip convex pattern is provided on the outer ring side of the rotating knob 5 .

[0026] Both side walls of the fault indicator body 2 are provided with fixing buttons 7 , and both ends of the U-shaped hook 1 are provided with rotation holes 9 , through which the U-shaped hook 1 is rotatably connected to the fixing buttons 7 ; an anti-wear ring 10 is provided in the rotation hole 9 .

[0027] The arc-shaped pressing plate 3 and the threaded rod 4 are both made of galvanized steel.

[0028] The working principle of the above-mentioned distribution network short-circuit grounding fault indicator is as follows:

[0029] After the U-shaped hook 1 is passed over the cable, the rotating hole 9 is inserted into the fixing button 7, and the position of the arc pressure plate 3 is adjusted so that the arc pressure plate 3 can be aligned with the cable, and then the rotating knob 5 is rotated to rotate the threaded rod 4, so that the arc pressure plate 3 can be pressed tightly on the cable. The adjusting device can make the arc pressure plate 3 stably press the cable, and the anti-skid ribs 12 in the cable groove 6 can effectively prevent the cable from skidding, so that the connection between the cable and the fault indicator body 2 is stable, avoiding misalignment, and ensuring the normal monitoring of the fault indicator body 2. When the cable is short-circuited to ground, the electromagnetic warning sign 8 can be rotated to a red warning sign to remind the inspection personnel.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A distribution network short circuit grounding fault indicator, characterized in that: The invention comprises a fault indicator body (2), the upper surface of which is provided with a cable trough (6), the side wall of which is rotatably connected with a U-shaped hook (1), the rotation direction of the U-shaped hook (1) is consistent with the direction of the central axis of the cable trough (6), the top of the U-shaped hook (1) is threadedly connected with a threaded rod (4), the bottom of the threaded rod (4) is provided with an arc-shaped pressing plate (3), and the arc-shaped pressing plate (3) is lowered by rotating the threaded rod (4) to cooperate with the cable trough (6) to press the cable tightly.

2. A distribution network short circuit grounding fault indicator as claimed in claim 1, characterized in that: The arc-shaped pressing plate (3) is provided with an adjustment device on the side facing the cable trough (6), and the adjustment device comprises a plurality of arc-shaped sheets (31) and a plurality of elastic silica gels (32). The plurality of arc-shaped sheets (31) and the plurality of elastic silica gels (32) are staggered and connected to form an arc-shaped surface (33). The outer arc surfaces of the arc-shaped surfaces (33) respectively match the inner arc surfaces of the arc-shaped pressing plate (3). A plurality of springs (34) are fixedly connected between the arc-shaped surface (33) and the arc-shaped pressing plate (3).

3. A distribution network short circuit grounding fault indicator as claimed in claim 1, characterized in that: A rotating knob (5) is provided at one end of the threaded rod (4) away from the cable trough (6), and an anti-slip convex pattern is provided on the outer ring side of the rotating knob (5).

4. A distribution network short circuit grounding fault indicator as claimed in claim 1, characterized in that: The cable trough (6) is provided with anti-slip ribs (12).

5. A distribution network short circuit grounding fault indicator as claimed in claim 1, characterized in that: An electromagnetic warning sign (8) is provided on the lower surface of the fault indicator body (2).

6. A distribution network short circuit grounding fault indicator as claimed in claim 1, characterized in that: Both side walls of the fault indicator body (2) are provided with fixing buttons (7), and both ends of the U-shaped hook (1) are provided with rotation holes (9), and the U-shaped hook (1) is rotatably connected to the fixing button (7) through the rotation holes (9); an anti-wear ring (10) is provided in the rotation hole (9).

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