Anti-falling insulation pad

Abstract

The utility model discloses an anti-falling insulation pad which comprises an insulation pad body, and the inner surface of the insulation pad body is provided with protrusions so that the inner side of the insulation pad can be attached to the outer surface of a cable. Inclined edges are arranged on the two sides of the outer surface of the insulation pad body, the inclined edges incline towards the center of the outer surface in the length direction of the insulation pad body, and after the hoop is fastened to the outer side of the insulation pad, the inclined edges on the two sides of the outer surface of the insulation pad body are compressed to abut against the two sides of the hoop respectively. Therefore, displacement of the insulation pad between the cable and the hoop is avoided. The insulation pad has the advantages of compact structure, simplicity and convenience in disassembly and assembly, high reliability, low cost and the like, solves the problem that in the prior art, fastening bolts are used for reinforcement, only the falling time of the insulation pad can be delayed, but the falling of the insulation pad cannot be solved, and improves the operation reliability and safety of a power transmission line.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable fixing components, and in particular relates to an anti-falling insulating pad. Background Art

[0002] In high-voltage transmission lines, especially when large-section cables or tubular busbars are used to transmit electric energy, when large currents flow through them, the vibration of the cable itself cannot be ignored. In order to prevent the cable from being displaced due to vibration or thermal expansion and contraction, the cable needs to be fixed on the bracket. For large-section cables or tubular busbars, two upper and lower semicircular metal clamps are generally used, which are fastened by bolts. In order to prevent the metal clamps from damaging the cables and to insulate the cables, a layer of cable fixing components is placed between the metal clamps and the cables. As the operating time increases, the cable fixing components are easily caused to fall off due to factors such as cable vibration and temperature difference changes. In response to the cable fixing component falling off event, the bolts are generally tightened or reinstalled. Tightening the bolts can only delay the time when the cable fixing components fall off, but cannot completely solve the problem of falling off. Reinstallation faces the danger of high voltage and bears greater risks. The out-of-service equipment is also faced with the adjustment of the boiler and steam turbine system, and the operation process and recovery process are complicated.

[0003] In Chinese patent CN 206947886 U, the clamp is prevented from falling off by the limiting grooves on both sides. In actual application of this method, the limiting grooves on both sides are easily brittle due to aging under the conditions of wind and sun, thereby losing the effect of preventing falling off. Utility Model Content

[0004] The technical problem to be solved by the utility model is to solve the problem of the insulating pad between the metal clamp and the cable falling off, and to provide an insulating pad which has a compact structure, is easy to disassemble and assemble, has high reliability and is low in cost and prevents it from falling off.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An anti-falling insulation pad comprises an insulation pad body, wherein a protrusion is provided on the inner surface of the insulation pad body to achieve the inner side of the insulation pad fitting with the outer surface of the cable; inclined edges are provided on both sides of the outer surface of the insulation pad body, and the inclined edges are inclined toward the center of the outer surface along the length direction of the insulation pad body. When a clamp is fastened to the outside of the insulation pad, the inclined edges on both sides of the outer surface of the insulation pad body are respectively compressed and abutted against the two sides of the clamp to prevent the insulation pad from being displaced between the cable and the clamp.

[0007] As a further improvement of the utility model, a flattening belt is further provided on the outer surface of the insulating pad body. The flattening belt is arranged in the middle of the outer surface along the length direction of the insulating pad body, and the inclined edges are respectively arranged on both sides of the flattening belt. The flattening belt is used to absorb the deformation of the inclined edges after compression.

[0008] As a further improvement of the utility model, a first fastening band and a second fastening band are respectively provided on both sides of the insulating pad body. When the clamp is fastened to the outside of the insulating pad, the first fastening band and the second fastening band are pressed against the upper and lower clamp bolts to prevent the insulating pad from falling off.

[0009] As a further improvement of the present invention, the inclination angle of the inclined edge is 10° to 30°.

[0010] As a further improvement of the present invention, the protrusion includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion are respectively arranged on both sides of the inner surface of the insulating pad body.

[0011] As a further improvement of the present invention, the thickness of the first protrusion and the second protrusion are both 10±2 mm.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] The utility model discloses an anti-falling insulating pad, by providing a protrusion on the inner surface of the insulating pad body, so as to achieve a better fit between the inner side of the insulating pad and the outer surface of the cable; inclined edges are provided on both sides of the outer surface of the insulating pad body, and the inclined edges are inclined toward the center of the outer surface along the length direction of the insulating pad body, so that the insulating pad is nested in the outer periphery of the cable and the clamp is nested in the outer periphery of the insulating pad, and the cable is fixed; when the clamp is fastened to the outside of the insulating pad, the inclined edges on both sides of the outer surface of the insulating pad body are compressed and abutted against the two sides of the clamp respectively, and the displacement of the insulating pad between the clamp and the cable is limited by the inclined edges, so that the insulating pad is firmly nested between the clamp and the cable, thereby eliminating the displacement of the insulating pad caused by cable vibration and temperature difference change, avoiding the insulating pad from falling off from the outer periphery of the cable, solving a series of problems caused by the falling off of the insulating pad and live installation during the operation of the power system, and improving the reliability and safety of the power system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structural principle of the insulating pad in a specific embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of the unfolded structure principle of the insulating pad in a specific embodiment of the utility model.

[0016] Figure 3 It is a schematic diagram of the unfolded structure principle of the insulating pad in a specific embodiment of the utility model from another perspective.

[0017] Legend: 1. First protrusion; 2. Second protrusion; 3. Inclined edge; 4. First fastening belt; 5. Second fastening belt; 6. Flat belt; 10. Insulation pad body. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0019] Example

[0020] like Figures 1 to 3 As shown, the anti-falling insulating pad of the utility model comprises an insulating pad body 10, and a protrusion is provided on the inner surface of the insulating pad body 10 to achieve the fitting of the inner side of the insulating pad with the outer surface of the cable; inclined edges 3 are provided on both sides of the outer surface of the insulating pad body 10, and the inclined edges 3 are inclined toward the center of the outer surface along the length direction of the insulating pad body 10. When the clamp is fastened to the outside of the insulating pad, the inclined edges 3 on both sides of the outer surface of the insulating pad body 10 are respectively compressed and abutted against the two sides of the clamp to prevent the insulating pad from being displaced between the cable and the clamp.

[0021] In this embodiment, a protrusion is provided on the inner surface of the insulating pad body 10 to achieve better fit between the inner side of the insulating pad and the outer surface of the cable; inclined edges 3 are provided on both sides of the outer surface of the insulating pad body 10, and the inclined edges 3 are inclined toward the center of the outer surface along the length direction of the insulating pad body, and the insulating pad is nested in the outer periphery of the cable, and the clamp is nested in the outer periphery of the insulating pad, that is, the cable is fixed. When the clamp is fastened to the outside of the insulating pad, the inclined edges on both sides of the outer surface of the insulating pad body are compressed and abutted against the two sides of the clamp, and the inclined edges 3 are used to limit the displacement of the insulating pad between the clamp and the cable, so that the insulating pad is firmly nested between the clamp and the cable, thereby eliminating the displacement of the insulating pad caused by cable vibration and temperature difference changes, avoiding the insulating pad from falling off from the outer periphery of the cable, solving a series of problems caused by the falling off of the insulating pad and live installation during the operation of the power system, and improving the reliability and safety of the power system operation.

[0022] like Figure 1 and Figure 3 As shown, in this embodiment, a flattening belt 6 is further provided on the outer surface of the insulating pad body 10. The flattening belt 6 is arranged in the middle of the outer surface along the length direction of the insulating pad body 10, and the inclined edges 3 are respectively arranged on both sides of the flattening belt 6. The flattening belt 6 is used to absorb the deformation of the inclined edges 3 after compression, thereby improving the connection reliability between the insulating pad and the clamp.

[0023] In this embodiment, a first fastening belt 4 and a second fastening belt 5 are respectively provided on both sides of the insulating pad body 10. When the clamp is fastened to the outside of the insulating pad, the first fastening belt 4 and the second fastening belt 5 are pressed against the upper and lower clamp bolts to further prevent the insulating pad from falling off.

[0024] In this embodiment, the inclination angle of the inclined edge 3 is 10°~30°. After the upper and lower clamps are tightened, the inclined edge 3 can form a thicker close-fitting limit strip according to the size of the clamp, so as to eliminate the displacement of the insulating pad caused by cable vibration and temperature difference.

[0025] like Figure 2 and Figure 3 As shown, in this embodiment, the protrusions include a first protrusion 1 and a second protrusion 2 , and the first protrusion 1 and the second protrusion 2 are respectively arranged on both sides of the inner surface of the insulating pad body 10 .

[0026] When the insulating pad is nested on the outer surface of the cable, the first protrusion 1 is located at the upper end of the insulating pad, and the second protrusion 2 is located at the lower end of the insulating pad. The first protrusion 1 is used to assist the clamp to compress the cable to eliminate the gap between the insulating pad and the cable, so as to improve the uniformity of force and service life of the insulating pad. The second protrusion 2 is used to offset the deformation of the insulating pad caused by the deadweight of the cable, so as to improve the uniformity of force and service life of the insulating pad.

[0027] Furthermore, the thickness of the first protrusion 1 and the second protrusion 2 are both 10±2 mm. By slightly thickening the lowest and highest points of the insulating pad body 10 by about 10 mm, the inner surface of the insulating pad can better fit the cable, and the outer surface of the insulating pad has no protrusions but can be evenly stressed, so that the insulating pad can fit tightly between the metal clamp and the cable.

[0028] Although the utility model is disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the utility model without departing from the spirit and technical solution of the utility model, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. An anti-falling insulating pad, It is characterized in that The insulating pad comprises an insulating pad body (10), wherein a protrusion is provided on the inner surface of the insulating pad body (10) so as to achieve the inner side of the insulating pad being fitted with the outer surface of the cable; inclined edges (3) are provided on both sides of the outer surface of the insulating pad body (10), and the inclined edges (3) are inclined toward the center of the outer surface along the length direction of the insulating pad body (10); when the clamp is fastened to the outer side of the insulating pad, the inclined edges (3) on both sides of the outer surface of the insulating pad body (10) are respectively compressed and abutted against the two sides of the clamp, so as to prevent the insulating pad from being displaced between the cable and the clamp.

2. The anti-falling insulating pad according to claim 1, It is characterized in that The outer surface of the insulating pad body (10) is further provided with a flattening belt (6), the flattening belt (6) being arranged at the middle of the outer surface along the length direction of the insulating pad body (10), the inclined edges (3) being arranged on both sides of the flattening belt (6), and the flattening belt (6) being used to absorb deformation of the inclined edges (3) after compression.

3. The anti-falling insulating pad according to claim 1, It is characterized in that A first fastening belt (4) and a second fastening belt (5) are respectively provided on both sides of the insulating pad body (10); when the clamp is fastened to the outside of the insulating pad, the first fastening belt (4) and the second fastening belt (5) are pressed against the upper and lower clamp bolts to prevent the insulating pad from falling off.

4. The anti-falling insulating pad according to any one of claims 1 to 3, It is characterized in that The inclination angle of the inclined edge (3) is 10° to 30°.

5. The anti-falling insulating pad according to any one of claims 1 to 3, It is characterized in that The protrusions comprise a first protrusion (1) and a second protrusion (2), and the first protrusion (1) and the second protrusion (2) are respectively arranged on both sides of the inner surface of the insulating pad body (10).

6. The anti-falling insulating pad according to claim 5, It is characterized in that The thickness of the first protrusion (1) and the second protrusion (2) are both 10±2 mm.

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