CN203014331U - Plugging device of down-lead cable - Google Patents

Abstract

The utility model discloses an occluder for down-conducting cables, the occluder comprises a cylindrical shell with a cavity inside, and a round hole tightly matched with the cable is opened at one end of the shell. , the other end of the housing is provided with an opening matching the steel pipe sleeved on the outside of the cable; both the round hole and the opening are provided with sealing strips or sealing tapes. The beneficial effect of the sealer for down-conducting cables of the utility model is that it can play a good role in protecting the joint between the down-conducting optical cable and the steel pipe, and has simple structure, convenient operation and strong practicability, and can well solve the problem of substation The structure leads to the sealing problem of the optical cable, which minimizes the safety hazards caused by water leakage and freezing to the cable and optical cable, ensures the safety of power production, and ensures the safe and stable operation of the power system and communication system.

Description

Blocker for down-conducting cables

technical field

The utility model relates to a sealing tool, in particular to a plugging device for down-conducting cables.

Background technique

For the sake of aesthetics and safety, cables or optical cables for power and communication are often buried underground, and the equipment connected to them such as substations is located on the ground. Optical cable connection, a section of optical cable whose upper end is connected to the substation equipment on the substation). The outer side of the downconducting optical cable of the substation is covered with a steel pipe, and there is a gap between the opening of the steel pipe and the downconducting optical cable, which needs to be sealed. The sealing of down-conducting optical cables and cables has always been a technical problem that plagues the safety production of electric power. The existing sealing of down-conducting optical cables and cables is usually sealed with fireproof mud. Loosening or even falling off, resulting in water leakage, corrosion of underground cables and optical cables, and potential safety hazards.

Contents of the invention

The technical problem to be solved by the utility model is to provide a plugging device for down-conducting cables, which can reliably seal the place where the upper end of the down-conducting cables protrudes from the steel pipe.

In order to solve the above-mentioned technical problems, the utility model provides a occluder for down-conducting cables, which includes a cylindrical shell with a cavity inside, and a circular ring that closely fits the cable is opened at one end of the shell. The other end of the housing is provided with an opening matching the steel pipe sleeved on the outside of the cable; both the round hole and the opening are provided with sealing strips or sealing tapes.

Preferably, the shell includes two half-shells cut along the plane where the axis is located, the inner surface of the half-shells is provided with a ring-shaped convex line, and the two half-shells are combined Corresponding outwardly protruding connecting lugs are provided at the bus bar, and connecting holes are provided on the connecting lugs.

Preferably, corresponding positioning posts and positioning holes are provided on the adjoining wall surfaces of the two half-shells.

As a preference, the downcomer cable occluder of the present utility model also includes an elastic gasket located in the casing, and the gasket is also divided into two sub-gaskets, the inner wall of the sub-gaskets is closely matched with the cable, so that The outer wall of the gasket is tightly fitted with the inner wall of the housing.

Preferably, the inner wall of the sub-gasket is provided with a plurality of ring-shaped protrusions.

Preferably, the shell is made of metal material.

Compared with the prior art, the beneficial effect of the sealer of the down-conducting cable of the present invention is that it can play a good role in protecting the joint between the down-conducting optical cable and the steel pipe, and has a simple structure, convenient operation and strong practicability , can well solve the sealing problem of the optical cable under the substation structure, minimize the safety hazards caused by water leakage and freezing to the cable and optical cable, ensure the safety of power production, and ensure the safe and stable operation of the power system and communication system.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of one of the half-shells of the occluder for downcomer cables according to an embodiment of the present invention;

Fig. 2 is a three-dimensional structural schematic view in another direction of Fig. 1;

Fig. 3 is a three-dimensional structural schematic diagram of the sub-washer used in the occluder for downcomer cables according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of the three-dimensional structure in another direction of FIG. 3 .

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

The cables mentioned in the specification and claims of the present utility model include electric cables and optical cables.

FIG. 1 is a schematic perspective view of a half-shell of a downcomer cable occluder according to an embodiment of the present invention; FIG. 2 is a schematic perspective view of another direction of FIG. 1 . Since the two half-shells 1 of the occluder constituting the downcomer have the same shape, only one of the half-shells 1 is shown in the figure.

As shown in Figures 1 and 2, an occluder for down-conducting cables includes a cylindrical shell with a cavity inside, and a round hole 14 that is tightly fitted with the cable is opened at one end of the shell. , the other end of the shell is provided with an opening 141 matching the steel pipe sleeved on the cable; the round hole 14 and the opening 141 are provided with sealing strips or sealing tapes (not shown in the figure) . Since Fig. 1 and Fig. 2 show the half shell 1, the cross sections of the circular hole 14 and the originally circular opening 141 in the figures are both semicircular. When in use, put the occluder of the downconducting cable of the present utility model on the cable, one end of which is provided with the opening 141 coincides with the opening of the steel pipe, and affixes a sealing tape or rubber strip to realize the connection with the steel pipe. seal between. One end provided with the round hole 14 realizes the sealing with the cable through the sheathed sealing rubber strip or sealing tape.

As a preferred solution, in order to facilitate the sealing operation, in this embodiment, as shown in Figures 1 and 2, the housing includes two half-shells 1 formed by cutting along a plane passing through its axis, the half-shells The inner surface of 1 is provided with a ring-shaped convex strip 18, and the connecting lug 15 protruding outward is provided at the bus bar where the two half-shells 1 are combined, and the connecting lug 15 is provided with a connecting hole 151 . The lugs 15 are preferably arranged symmetrically on both sides of the half-shell 1, and four pairs are provided in this embodiment, so that the two half-shells 1 are firmly connected. After the two half-shells 1 are fastened together, they can be connected by bolts or screws. If internal threads are provided on the connecting holes 151, they can be connected by screws, or only the connecting holes 151 can be provided, and the two parts can be fastened by bolts and nuts. A half shell 1. In this way, during the sealing operation, the two half-shells 1 can be buckled on the cable, and then the two half-shells 1 are tightly connected, and then the round holes are sealed with sealing tape and/or sealing tape respectively 14 and opening 141 places get final product.

As shown in FIG. 1 , for convenient connection, corresponding positioning columns 17 and positioning holes 171 are provided on opposite surfaces of the two half-shells 1 . The so-called corresponding setting means that one half-shell 1 is provided with a positioning column 17, and the corresponding position of the other half-shell 1 is provided with a positioning hole 171. When the two half-shells 1 are buckled together, the positioning column 17 Inserting into the positioning hole 171 is convenient for installation, and is beneficial to the stability of the position between the two half-shells 1 .

In order to achieve a better sealing effect, the occluder for downcomer cables in this embodiment also includes an elastic gasket located in the casing, as shown in Figures 3 and 4, the gasket is also divided into two sub-gaskets 2, The inner wall of the sub-gasket 2 is closely matched with the cable, and the outer wall of the sub-gasket 2 is closely matched with the inner wall of the half-shell 1, that is to say, the outer wall of the sub-gasket 2 is also provided with a ring matching the inner surface of the half-shell 1. shape structure. As shown in Figures 3 and 4, the outer wall of the sub-gasket 2 is provided with a plurality of ring-shaped first protrusions 21 arranged in parallel to form a plurality of convex strips 18 arranged in parallel on the inner wall of the half shell 1. work close with. As shown in FIG. 4 , preferably, the inner wall of the sub-gasket 2 is provided with a plurality of ring-shaped two protrusions 22 . As shown in Figures 3 and 4, similar to the case of the shell, the two sub-gaskets 2 are combined into a complete gasket. One end of the gasket is provided with a through hole 27 for the passage of cables only, and the other end of the gasket is provided with a steel pipe. Opening 28. In FIG. 3 and FIG. 4 , the cross-sections of the through hole 27 and the opening 28 on the sub-gasket 2 are semicircular.

In order to protect the stretching, twisting, and impact of some cables near the seal, and to effectively prevent material aging caused by cold, heat, oxygen, ultraviolet rays, and microorganisms in nature, the shell is made of Made of hard metal material, it can ensure that the shell has a certain strength and can resist the invasion of the outside world. In order to achieve a good sealing effect, the material of the sub-gasket 2 is made of a flexible material with good sealing effect such as rubber.

It can be seen from the above description that the sealer for down-conducting cables in this embodiment can play a good role in protecting the joint between down-conducting cables and steel pipes, and has a simple structure, convenient operation, strong practicability, and can be easily Solve the sealing problem of the optical cable under the substation structure well, minimize the safety hazards caused by water leakage and freezing to the cable and optical cable, ensure the safety of power production, and ensure the safe and stable operation of the power system and communication system.

The above embodiments are only exemplary embodiments of the utility model, and are not used to limit the utility model, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the spirit and protection scope of the utility model, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the utility model.

Claims (6)

1. A occluder for down-leading cables, characterized in that it comprises a cylindrical shell with a cavity inside, and one end of the shell is provided with a round hole closely matched with the cable, and the shell The other end of the cable is provided with an opening matching the steel pipe sleeved on the outside of the cable; the round hole and the opening are provided with sealing strips or sealing tapes. 2. The occluder for down-conducting cables according to claim 1, characterized in that, the outer casing includes two half-shells formed by cutting along the plane where its axis is located, and the inner shell of the half-shell The surface is provided with a ring-shaped convex strip, and the bus bar where the two half-shells are combined is provided with a corresponding connecting lug protruding outward, and a connecting hole is provided on the connecting lug. 3. The occluder for down-conducting cables according to claim 2, characterized in that, corresponding positioning columns and positioning holes are provided on the wall surfaces where the two half-shells meet. 4. The occluder for down-conducting cables according to claim 2, further comprising an elastic gasket located in the casing, the gasket is also divided into two sub-gaskets, the inner wall of the sub-gasket is in contact with the inner wall of the sub-gasket. The cable is closely matched, and the outer wall of the sub-gasket is closely matched with the inner wall of the housing. 5. The occluder for down-conducting cables according to claim 4, characterized in that, the inner wall of the sub-gasket is provided with a plurality of annular protrusions. 6. The occluder for downcomer cables according to any one of claims 1-5, characterized in that, the casing is made of metal material.

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