CN108054703A - A kind of plugging structure for cable hole - Google Patents

Abstract

The present invention discloses a kind of plugging structure for cable hole, includes, wall body, is formed with the cable hole extended along the longitudinal direction thereon；Cable is worn, is arranged in the cable hole；And, plugging device has and is placed in the cable hole and the rubber body worn between cable, compresses foreboard, the compression back plate of rear side in the cable hole and the connection connecting screw for compressing foreboard and the compression back plate in the front side at the cable hole.The beneficial effects of the present invention are：Simple in structure, easy for construction, cable hole and the gap worn between cable are stated in effectively closure, achieve the purpose that waterproof, anti-moisture, anti-condensation, dust protection, anti-pernicious gas, anti-insect bite, fire prevention, uprising and safety ground.

Description

A kind of sealing structure for cable hole

technical field

The invention relates to a plugging structure for cable holes.

Background technique

At present, such as the cable threading construction of 110kV, 220kV, and 500kV, the cables are all passed through the cable holes on the wall directly. After construction, there will always be a gap between the cable and the cable hole, causing water, moisture, and even insects to enter through the gap and affect the equipment.

Contents of the invention

The technical problem to be solved by the present invention is to eliminate existing gaps and to provide a sealing structure for cable holes.

In order to achieve this goal, the technical solution of the present invention is as follows: a plugging structure for cable holes, comprising,

The wall body is formed with a cable hole extending along the front-to-back direction;

threading a cable through the cable hole; and,

The blocking device has a rubber sleeve accommodated between the cable hole and the threaded cable, a compression front plate located on the front side of the cable hole and surrounding the outside of the threaded cable, and a The rear side of the cable hole and the compression rear plate surrounding the outer side of the passing cable and the connecting screw connecting the compression front plate and the compression rear plate, through the connection screw, the compression The front plate and the compression rear plate jointly compress the rubber sleeve body in the front-rear direction, so that the rubber sleeve body expands in its radial direction, and realize the tightness between the rubber sleeve body and the passing cable. Cooperate.

As a preferred solution for the plugging structure of the cable hole, the rubber sleeve is composed of the outer ring part of the sleeve and the inner ring of the sleeve.

As a preferred solution for the plugging structure of the cable hole, the inner ring of the sleeve is composed of a plurality of tearable rubber layers.

As a preferred solution for the plugging structure of the cable hole, each of the rubber tearable layers has a thickness of 1 mm.

As a preferred solution for the plugging structure of the cable hole, the front and rear surfaces of the outer ring of the sleeve are respectively in contact with the rear surface of the compression front plate and the front surface of the compression rear plate, so that the The pressing force provided by the pressing front plate and the pressing rear plate only acts on the outer ring of the casing.

As a preferred solution for the plugging structure of the cable hole, the length of the inner ring of the sleeve is shorter than the length of the outer ring of the sleeve and the inner ring of the sleeve is in front of the outer ring of the sleeve. within the range defined later.

As a preferred solution for the plugging structure of the cable hole, both the compacted front plate and the compacted rear plate are made of stainless steel.

As a preferred solution of the plugging structure for the cable hole, the blocking device is divided into more than two device subunits along its circumferential direction.

Compared with the prior art, the beneficial effects of the present invention are at least: simple structure, convenient construction, effectively sealing the gap between the cable hole and the passing cable, achieving waterproof, moisture-proof, condensation-proof and dust-proof , Anti-harmful gas, anti-insect bites, fire prevention, anti-riot and safety grounding purposes.

In addition to the technical problems solved by the present invention described above, the technical features constituting the technical solutions and the beneficial effects brought by the technical features of these technical solutions, other technical problems that the present invention can solve, and the technical features contained in the technical solutions Other technical features and the beneficial effects brought by these technical features will be further described in detail in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of A-A in FIG. 1 .

Detailed ways

The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

Please refer to Figures 1 and 2, which show a sealing structure for cable openings, which are suitable for sealing the openings of 110kV, 220kV, and 500kV cable ducts. The sealing structure is mainly composed of wall body, piercing cable, sealing device and other components.

A cable hole extending along the front and back direction is formed on the wall body. Wherein, the cable hole may be circular, square or other shapes.

The threaded cable is threaded through the cable hole.

The blocking device has a rubber sleeve 3 accommodated between the cable hole and the threaded cable, a compression front plate 1 located on the front side of the cable hole and surrounding the outside of the threaded cable, The compression rear plate 2 which is located at the rear side of the cable hole and surrounds the outer side of the passing cable and the connecting screw 4 connecting the compression front plate 1 and the compression rear plate 2 . By means of the connecting screw 4, the compression front plate 1 and the compression rear plate 2 jointly compress the rubber sleeve 3 in the front-rear direction, so that the rubber sleeve 3 in its radial direction expansion to realize the tight fit between the rubber sleeve 3 and the passing cable.

The rubber sleeve 3 is composed of an outer ring part 31 and an inner ring part 32 of the sleeve.

The sleeve inner ring part 32 is composed of a plurality of rubber tearable layers. The thickness of each said rubber tearable layer is 1mm. During construction, if it is found that the outer diameter of the threaded cable does not match the inner diameter of the rubber sleeve 3, some redundant rubber tearable layers can be torn off, that is, the inner diameter of the rubber sleeve 3 can be increased, to match the threaded cable. This method is convenient and efficient.

The casing outer ring part 31 is a whole piece of rubber structure. The front and back of the sleeve outer ring portion 31 are respectively in contact with the rear of the compression front plate 1 and the front of the compression rear plate 2, so that the compression front plate 1 is in contact with the compression rear plate 2. The pressing force provided by the plate 2 acts only on the outer ring portion 31 of the sleeve. Wherein, the length of the inner ring part 32 of the sleeve is slightly smaller than the length of the outer ring part 31 of the sleeve (generally, 5-20mm smaller), and the inner ring part 32 of the sleeve is in front of the outer ring part 31 of the sleeve, Within the range defined later, it is preferably in the middle position.

Both the pressing front plate 1 and the pressing rear plate 2 are made of stainless steel to avoid rusting of the plate body.

In order to facilitate construction and installation, the blocking device can be divided into more than two device subunits along its circumferential direction. As shown in Figure 1, it is divided into left and right halves.

The sealing device is used to effectively block the gap between the cable hole and the passing cable, so as to achieve waterproof, moisture-proof, condensation-proof, dust-proof, harmful gas-proof, insect-proof, fire-proof, anti-riot and safe grounding the goal of.

The above only expresses the embodiment of the present invention, and its description is relatively specific and detailed, but it should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (8)

1. A plugging structure for a cable hole, characterized in that it comprises, The wall body is formed with a cable hole extending along the front-to-back direction; threading a cable through the cable hole; and, The blocking device has a rubber sleeve accommodated between the cable hole and the threaded cable, a compression front plate located on the front side of the cable hole and surrounding the outside of the threaded cable, and a The rear side of the cable hole and the compression rear plate surrounding the outer side of the passing cable and the connecting screw connecting the compression front plate and the compression rear plate, through the connection screw, the compression The front plate and the compression rear plate jointly compress the rubber sleeve body in the front-rear direction, so that the rubber sleeve body expands in its radial direction, and realize the tightness between the rubber sleeve body and the passing cable. Cooperate. 2 . The sealing structure for cable holes according to claim 1 , wherein the rubber sleeve is composed of an outer ring and an inner ring. 3 . 3. A sealing structure for a cable hole according to claim 2, characterized in that, the inner ring of the sleeve is composed of a plurality of rubber tearable layers. 4. A sealing structure for a cable hole according to claim 3, wherein the thickness of each said rubber tearable layer is 1mm. 5. A plugging structure for cable holes according to claim 2, characterized in that, the front and rear sides of the outer ring of the sleeve are respectively connected to the rear side of the compacted front plate and the compacted rear panel. The front surfaces of the plates are in face-to-face contact, so that the pressing force provided by the pressing front plate and the pressing rear plate only acts on the outer ring of the casing. 6. A sealing structure for a cable hole according to claim 5, characterized in that, the length of the inner ring of the sleeve is shorter than the length of the outer ring of the sleeve and the inner ring of the sleeve is in a position formed by In the range defined by the front and rear of the outer ring of the sleeve. 7 . The sealing structure for cable holes according to claim 1 , characterized in that, both the compacted front plate and the compacted rear plate are made of stainless steel. 7 . 8. A plugging structure for a cable hole according to any one of claims 1 to 7, characterized in that, the plugging device is divided into more than two device subunits along its circumferential direction.