CN212322713U - Composite cable capable of being stably connected - Google Patents
Composite cable capable of being stably connected Download PDFInfo
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- CN212322713U CN212322713U CN202020495591.5U CN202020495591U CN212322713U CN 212322713 U CN212322713 U CN 212322713U CN 202020495591 U CN202020495591 U CN 202020495591U CN 212322713 U CN212322713 U CN 212322713U
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Abstract
The utility model discloses a can stably refute composite cable who connects, it includes cable sheathing, electrically conductive inner core and air-blowing pipe, and electrically conductive inner core and air-blowing pipe all wrap up in cable sheathing, and it has the filler still to fill in cable sheathing, and the air-blowing pipe includes outer pipe and inlayer pipe, and inlayer pipe activity is worn in outer pipe. The utility model discloses a refuting of air-blowing pipe connects more easily, more stable.
Description
Technical Field
The utility model relates to a can stably refute composite cable who connects.
Background
In recent years, with the rapid development of distribution network automation technology, the demand for power communication in distribution network construction is also increasing year by year. The optical fiber communication has the advantages of high speed, stability, reliability, strong anti-interference capability and the like, but the problems of planning delay, cable channel encroachment and the like also occur in the laying of a large number of optical cables. The introduction of the optical fiber composite cable is beneficial to solving the channel problem when the communication network is accessed.
Medium voltage blown composite cables appear in medium voltage distribution networks (10-20kV voltage class), comprising an electrically conductive inner core and a blowing duct, into which the optical fiber is passed by means of pneumatic blowing only after the medium voltage composite cable is installed. For the medium-voltage distribution grade cable, the standard plate length is generally 500 meters, so the medium-voltage composite cable also needs to be spliced for many times in the construction and installation process. At the connection position, the end faces of the two air blowing guide pipes need to be tightly connected, so that gaps are not suitable to be left, and the air blowing effect when the optical fibers are installed in a pneumatic blowing mode in the future is not influenced. However, the conductive inner cores of the medium-voltage composite cables are relatively thick, and once the grip of the outer tube at the spliced part is insufficient, when the cable head is closed after splicing, excessive stress may be generated between the spliced air-blowing guide tubes to form a gap, which is not favorable for the operation of air-blowing the optical cable in the future.
In order to solve the unstable connection condition of the air-blowing guide pipe, constructors bend the air-blowing guide pipe at the connection part to a certain degree, so that the problem can be solved to a certain degree. However, the experience and skill of the construction personnel are dispersive after all, and the bending degree of the air blowing pipe is deviated during construction, so that the construction quality is unstable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can stably refute the composite cable who connects is provided, refute of its air-blowing pipe connect easier, more stable.
Solve above-mentioned technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a can stably refute composite cable who connects, its includes cable sheathing, electrically conductive inner core and air-blowing pipe, and electrically conductive inner core and air-blowing pipe all wrap up in the cable sheathing, still fill filler, its characterized in that in the cable sheathing: the air blowing conduit comprises an outer layer pipe and an inner layer pipe, wherein the inner layer pipe movably penetrates through the outer layer pipe.
Furthermore, a gap is arranged between the inner layer pipe and the outer layer pipe.
Furthermore, the gap is filled with lubricating ointment.
Further, the cable sheath includes around the covering and the oversheath of cover on around the covering.
Further, the conductive inner core comprises a conductor and an insulating layer sleeved on the conductor.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses an air-blowing catheter includes outer pipe and inlayer pipe, and the inlayer pipe is that the activity is worn in outer intraductal, and inlayer pipe can carry out the activity of certain degree relatively outer pipe. Refute and connect two the utility model discloses a during composite cable, the air-blowing pipe only refutes and connects inner tube wherein, can not influence the installation of blowing in of pneumatic optic fibre in the future promptly like this, and because the relative outer pipe of inner tube is movable, can be fine alleviate refute the stress that connects the department to produce, guaranteed the refute of air-blowing pipe and connect stably, refute moreover and connect also more easily.
Drawings
Fig. 1 is a schematic cross-sectional view of a composite cable of the present invention;
fig. 2 is a schematic structural view of two composite cables according to the present invention during connection;
fig. 3 is a schematic structural view of two composite cables of the present invention after being connected;
fig. 4 is a schematic view of the installation structure of the sealing end installed at the end of the composite cable according to the present invention.
The reference numerals in the drawings mean:
1-a cable sheath; 1.1-outer sheath; 1.2-wrapping a covering; 2-an air-blown conduit; 2.1-inner layer tube; 2.2-outer layer tube; 2.3-clearance; 3-a conductive inner core; 3.1-insulating layer; 3.2-conductor; 4-a filler; 5-crimping the barrel sleeve; 6-connecting a sleeve; 7-sealing the end; 7.1-sleeve; 7.2-conductive inner core sealing sleeve; 7.3-sealing sleeve of air-blowing conduit; 8-strapping tape; 9-a connector housing; 10-insulating bundling layer.
Detailed Description
The present invention will be further described with reference to the following examples.
A composite cable that can be stably docked as shown in fig. 1 includes a cable jacket 1, a conductive inner core 3, and an air-blowing duct 2.
The cable sheath 1 comprises a wrapping layer 1.2 and an outer sheath 1.1 sleeved on the wrapping layer 1.2, the conductive inner core 3 and the air blowing pipe 2 are wrapped in the wrapping layer of the cable sheath 1, and the cable sheath 1 is filled with filler 4. The conductive inner core 3 comprises a conductor 3.2 and an insulating layer 3.1 sleeved on the conductor 3.2. The present embodiment comprises three conductive cores 3 for conducting three-phase electricity.
The air blowing pipe 2 of the embodiment comprises an outer layer pipe 2.2 and an inner layer pipe 2.1, wherein the inner layer pipe 2.1 is movably penetrated in the outer layer pipe 2.2. The movable structure of the inner layer pipe 2.1 is that a gap 2.3 is arranged between the inner layer pipe 2.1 and the outer layer pipe 2.2, so that the inner layer pipe 2.1 can move to a certain degree relative to the outer layer pipe 2.2.
This embodiment still packs lubricated oleamen in the clearance, can reach the lubrication action between inlayer pipe 2.1 and outer pipe 2.2, can better relieve the pulling force, and can also prevent to invade from the clearance at unfavorable factors such as construction and transportation steam.
When refuting two compound cables of this embodiment, as shown in fig. 2, the conductor 3.2 of electrically conductive inner core 3 refutes through conventional crimping barrel casing 5 and connects, and the crooked certain degree of air-blowing pipe 2, air-blowing pipe 2 only refutes and connects its inlayer pipe 2.1, refutes through conventional refutes sleeve pipe 6 between the inlayer pipe 2.1 and connects, later accomplishes subsequent processing with conventional cable refutes and connects the accessory and refutes the mode. In the connection process, because the inner layer pipe 2.1 is movable relative to the outer layer pipe 2.2, the connection of the inner layer pipe 2.1 is easier, and the tensile stress at the connection part can be relieved, so that the stability of the connection part is ensured when the straightening air-blowing catheter 2 is used subsequently. The above-mentioned subsequent processing of the docking station may be: as shown in fig. 3, the conductive inner core 3 is closed towards the middle, the air-blowing duct 2 is basically straightened, the inner-layer tube 2.1 is movable relative to the outer-layer tube 2.2, the tensile stress at the joint of the air-blowing duct 2 is basically relieved, the insulating bundling layer 10 is wound at the joint of the conductive inner core 3, the bundling belts 8 are tied at the end parts of the two composite cables, then the joint shell 9 is sleeved, and the empty place is filled with the joint filler in the joint shell 9, so that the joint is closed, and the joint is completed.
Preferably, the outer layer pipe 2.2 can be made of a material with higher rigidity, and the inner layer pipe 2.1 can be made of a material with better tensile property, so that the tensile stress at the connection part can be better relieved.
As shown in fig. 4, both ends of the composite cable connected into a whole strip can be sealed by using the sealing end 7, the sealing end 7 comprises a sleeve 7.1 sleeved on the end of the composite cable, a conductive core sealing sleeve 7.2 sleeved on the extended conductive core 3 and an air-blowing conduit sealing sleeve 7.3 sleeved on the extended air-blowing conduit 2, the sealing end 7 is made of heat-shrinkable or cold-shrinkable silicon rubber, and when the sealing end 7 is sleeved on both ends of the composite cable, the sealing end is shrunk by heating or removing a support.
The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.
Claims (5)
1. The utility model provides a can stably refute composite cable who connects, its includes cable sheathing, electrically conductive inner core and air-blowing pipe all wrap up in the cable sheathing still fill in the cable sheathing has filler, its characterized in that: the air blowing conduit comprises an outer layer pipe and an inner layer pipe, and the inner layer pipe movably penetrates through the outer layer pipe.
2. The stably dockable composite cable of claim 1, wherein: and a gap is arranged between the inner layer pipe and the outer layer pipe.
3. The stably dockable composite cable of claim 2, wherein: and lubricating ointment is filled in the gap.
4. The stably dockable composite cable of claim 1, wherein: the cable sheath comprises a wrapping layer and an outer sheath sleeved on the wrapping layer.
5. The stably dockable composite cable of claim 1, wherein: the conductive inner core comprises a conductor and an insulating layer sleeved on the conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020495591.5U CN212322713U (en) | 2020-04-07 | 2020-04-07 | Composite cable capable of being stably connected |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202020495591.5U CN212322713U (en) | 2020-04-07 | 2020-04-07 | Composite cable capable of being stably connected |
Publications (1)
Publication Number | Publication Date |
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CN212322713U true CN212322713U (en) | 2021-01-08 |
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CN202020495591.5U Active CN212322713U (en) | 2020-04-07 | 2020-04-07 | Composite cable capable of being stably connected |
Country Status (1)
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2020
- 2020-04-07 CN CN202020495591.5U patent/CN212322713U/en active Active
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