CN210744123U

CN210744123U - Leaky cable and signal amplification structure

Info

Publication number: CN210744123U
Application number: CN201922282816.9U
Authority: CN
Inventors: 谷俊江
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-06-12
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a leaky cable and signal amplification structure, comprising a leaky cable body, a power line and a sheath, wherein the leaky cable body comprises an inner conductor, an insulator and an outer conductor which are arranged from inside to outside in sequence, and the outer conductor is provided with a slotted hole; the power line comprises a conducting wire, an insulating layer I, a shielding layer and an insulating layer II which are sequentially arranged from inside to outside; and a bidirectional amplifier is arranged on the leakage cable body. The utility model discloses leak and to avoid the influence of power supply line to the leaky cable body, increase two-way amplifier simultaneously for the live range of leaky cable prolongs greatly, can freely cut the leaky cable as required, can use any scene.

Description

Leaky cable and signal amplification structure

Technical Field

The utility model relates to a leak cable, integrative structure of two-way amplifier belongs to the communication technology field.

Background

The leaky coaxial cable is a leaky coaxial cable for short, has a signal transmission function and an antenna function, can uniformly radiate controlled electromagnetic wave energy out and receive the controlled electromagnetic wave energy in along a line by controlling an opening of a conductor, and realizes the coverage of an electromagnetic field blind area so as to achieve the aim of smooth mobile communication. As shown in fig. 1, the conventional leaky cable structure includes an inner conductor 11, an insulator 12, an outer conductor 13, and a sheath 4, which are sequentially disposed from inside to outside, wherein a slot 131 is disposed on the outer conductor 13. The transverse electromagnetic wave is transmitted from the transmitting end to the other end of the leaky cable through the coaxial cable. When the outer conductor of the leaky cable is completely closed, the signal transmitted by the leaky cable is completely shielded from the outside, and no electromagnetic field exists outside the leaky cable, or no electromagnetic radiation is measured. Likewise, the external electromagnetic field will not affect the signal in the cable. However, a part of the electromagnetic energy transmitted in the leaky cable is transmitted to the external environment through the slot hole formed on the outer conductor of the coaxial leaky cable. Likewise, external energy can also be transmitted into the leaky cable. The slot on the outer conductor enables the coupling between the electromagnetic field in the leaky cable and the external electric wave.

The signal in the common coaxial leaky cable weakens along with the transmission distance under a certain frequency. The attenuation performance depends mainly on the type of insulation layer and the size of the leaky cable. Generally, in long-distance transmission, a bidirectional amplifier is installed on a coaxial leaky cable, a received signal and a transmitted signal transmitted in the leaky cable are amplified and transmitted, so that the signals are transmitted in a relay mode, but in the scenes such as a tunnel, the bidirectional amplifier cannot be installed in the tunnel randomly, the bidirectional amplifier can only be installed in a fixed cavern opened in the tunnel, the distance between every two caverns is fixed, the opening of the existing cavern is opened under the communication conditions of 3G and 4G, the communication connection quality required by the existing cavern is higher under the communication condition of 5G, the energy loss of the leaky cable is large, the communication distance under the communication condition of 5G is less than half of the communication distance under the communication condition of 4G, and the bidirectional amplifier cannot be installed in the tunnel randomly.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the deficiencies in the prior art, the utility model provides a prevent to produce the leaky cable and the signal amplification structure of coupling between leaky cable inside electromagnetic field and the external electric wave.

The technical scheme is as follows: in order to achieve the above object, the utility model adopts the following technical scheme:

a leaky cable comprises a leaky cable body, a power line and a sheath, wherein the leaky cable body comprises an inner conductor, an insulator and an outer conductor which are sequentially arranged from inside to outside, and a slotted hole is formed in the outer conductor; the power line comprises a conducting wire, an insulating layer I, a shielding layer and an insulating layer II which are sequentially arranged from inside to outside; the power line is tightly attached to the leaky cable body, and the leaky cable body and the power line are wrapped together by the sheath.

Preferably: the shielding layer is a conduit.

A signal amplification structure based on a leaky cable is characterized in that a bidirectional amplifier is arranged on a leaky cable body, a leaky cable body connector and a power line connector are arranged on the bidirectional amplifier, the leaky cable body connector comprises an inner conductor connecting column, an insulating sleeve and an outer conductor connecting column, the inner conductor connecting column is connected with an inner conductor, the insulating sleeve covers the joint of the inner conductor connecting column and the inner conductor, and the outer conductor connecting column is connected with an outer conductor; the power cord connector comprises a wire connecting column, an insulation sleeve I, a shielding layer connecting column and an insulation sleeve II, wherein the wire connecting column is connected with a wire, the insulation sleeve I covers the connecting position of the wire connecting column and the wire, the shielding layer connecting column is connected with a shielding layer, and the insulation sleeve II covers the connecting position of the shielding layer connecting column and the shielding layer.

Preferably: the first inner conductor connecting column and the inner conductor are connected together through welding or bolts, and the first outer conductor connecting column and the outer conductor are connected together through welding or bolts; the first lead connecting column is connected with the lead through welding or bolts, and the first shielding layer connecting column is connected with the first shielding layer through welding or bolts.

Preferably: the diameter of the bidirectional amplifier is equal to that of the leakage cable body.

Preferably: the sheath wraps the leaky cable body, the power line and the bidirectional amplifier together.

Preferably: the bidirectional amplifier is provided with a radiating pipe, the inner surface of the radiating pipe is arranged on the bidirectional amplifier, and the outer surface of the radiating pipe extends out of the sheath.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses be provided with the shielding layer in the wire outside, with the magnetic field shielding that the wire circular telegram produced, consequently can avoid the influence of power supply line to the leaky cable body, avoided producing the coupling between the inside electromagnetic field of leaky cable and the external electric wave.

2. The utility model discloses set up two-way amplifier on the leaky cable body, amplify the back at the transmission through the signal of the leaky cable body transmission at its both ends of two-way amplifier for the service distance of leaky cable prolongs greatly, can freely cut the leaky cable as required simultaneously, can use any scene.

3. The bidirectional amplifier is connected with the leakage cable body through welding or bolts, so that signal transmission distortion is avoided, and meanwhile, the bidirectional amplifier can be conveniently processed.

4. The bidirectional amplifier and the leakage cable body are coated with the sheath, so that the bidirectional amplifier and the leakage cable body form a whole.

Drawings

Fig. 1 is a schematic view of a conventional leaky cable structure.

Fig. 2 is the schematic view of the structure of the leaky coaxial cable of the utility model.

Fig. 3 is a schematic structural view of a leaky cable body.

Fig. 4 is a schematic view of a connection structure between a drain cable body and a first bidirectional amplifier.

Fig. 5 is a schematic view of a connection structure between a drain cable body and a second bidirectional amplifier.

Detailed Description

The invention will be further elucidated with reference to the drawings and specific embodiments, it being understood that these examples are intended to illustrate the invention only and are not intended to limit the scope of the invention, and that modifications to the various equivalent forms of the invention, which may occur to those skilled in the art after reading the present invention, fall within the scope of the invention as defined in the claims appended hereto.

A leaky cable, as shown in fig. 2-4, comprising a leaky cable body 1, a power line 2 and a sheath 4, wherein the leaky cable body 1 comprises an inner conductor 11, an insulator 12 and an outer conductor 13 which are sequentially arranged from inside to outside, and the outer conductor 13 is provided with a slot 131; the power line 2 comprises a conducting wire 21, a first insulating layer 22, a shielding layer 23 and a second insulating layer 24 which are sequentially arranged from inside to outside; the power line 2 is tightly attached to the leaky cable body 1, and the sheath 4 wraps the leaky cable body 1 and the power line 2 together. The shielding layer 23 is a conduit.

2-4, a bidirectional amplifier is arranged on a leaky cable body 1, the bidirectional amplifier is divided into an internal bidirectional amplifier and an external bidirectional amplifier, the internal bidirectional amplifier is a first bidirectional amplifier 3, the external bidirectional amplifier is a second bidirectional amplifier 5, a first leaky cable body connector 31 and a first power cord connector 32 are arranged on the first bidirectional amplifier 3, the first leaky cable body connector 31 comprises a first inner conductor connecting post 311, a first insulating sleeve 312 and a first outer conductor connecting post 313, the first inner conductor connecting post 311 is welded with an inner conductor 11, the first insulating sleeve 312 is coated on a welding position of the first inner conductor connecting post 311 and the inner conductor 11, and the first outer conductor connecting post 313 is welded with an outer conductor 13. First power cord connector 32 includes first wire connecting post 321, first insulating cover 322, first shielding layer connecting post 323, first insulating cover two 324, first wire connecting post 321 is in the same place with the welding of wire 21, the cladding of first insulating cover 322 is in first wire connecting post 321 and wire 21 splice, and first shielding layer connecting post 323 is in the same place with the welding of first shielding layer 23, the cladding of first insulating cover two 324 is in first shielding layer connecting post 323 and shielding layer 23 splice. The diameter of the first bidirectional amplifier 3 is equal to that of the drain cable body 1. The power line 2 is tightly attached to the leaky cable body 1, and the leaky cable body 1, the power line 2 and the first bidirectional amplifier 3 are coated together by the sheath 4.

The first bidirectional amplifier 3 is provided with a radiating pipe, the inner surface of the radiating pipe is arranged on the first bidirectional amplifier 3, and the outer surface of the radiating pipe extends out of the sheath 4. The arrangement of the radiating pipe increases the radiating area and can mark the position of the first bidirectional amplifier.

When the exposed second bidirectional amplifier 5 needs to be added, as shown in fig. 2 and 5, a second leaky cable body connector 51 and a second power cord connector 52 are arranged on the second bidirectional amplifier 5, the second leaky cable body connector 51 includes a second inner conductor connecting column 511, a second insulating sleeve 512 and a second outer conductor connecting column 513, the second power cord connector 52 includes a second lead connecting column 521, a first second insulating sleeve 522, a second shielding layer connecting column 523 and a second insulating sleeve 524, the sheath 4 of the leaky cable is removed first, the power cord 2 is stripped off to form the leaky cable body 1, the leads 21, the first insulating layer 22, the shielding layer 23 and the second insulating layer 24 in the power cord 2 are stripped off one by one, and the inner conductors 11, the insulators 12 and the outer conductors 13 in the leaky cable body 1 are stripped off one by one. And then the leakage cable body 1 is connected, the inner conductor 11 is connected with the second leakage cable body connector 51 through a bolt, the second insulating sleeve 512 is coated at the joint of the second inner conductor connecting column 511 and the inner conductor 11, the second outer conductor connecting column 513 is connected with the outer conductor 13 through a bolt, and a protective layer is coated at the joint of the second outer conductor connecting column 513 and the outer conductor 13. And secondly, connecting the power line 2, namely firstly connecting the second lead connecting column 521 with the lead 21 through a bolt, coating a second insulating sleeve 522 at the joint of the second lead connecting column 521 and the lead 21, connecting the second shielding layer connecting column 523 with the shielding layer 23 through a bolt, and coating a second insulating sleeve 524 at the joint of the second shielding layer connecting column 523 with the shielding layer 23 to complete the connection of the leaky cable and the second bidirectional amplifier 5.

The utility model discloses the exposure of two-way amplifier has been avoided to the leaky cable for the live range of leaky cable prolongs greatly, can freely cut the leaky cable as required, can use any scene.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A leaky cable, characterized in that: the leakage cable comprises a leakage cable body (1), a power line (2) and a sheath (4), wherein the leakage cable body (1) comprises an inner conductor (11), an insulator (12) and an outer conductor (13) which are sequentially arranged from inside to outside, and a slotted hole (131) is formed in the outer conductor (13); the power line (2) comprises a lead (21), an insulating layer I (22), a shielding layer (23) and an insulating layer II (24) which are sequentially arranged from inside to outside; the power line (2) is tightly attached to the leaky cable body (1), and the leaky cable body (1) and the power line (2) are wrapped together by the sheath (4).

2. The leaky cable as claimed in claim 1, wherein: the shielding layer (23) is a conduit.

3. A leaky cable signal amplifying structure according to claim 1, wherein: the leakage cable body (1) is provided with a bidirectional amplifier, the bidirectional amplifier is provided with a leakage cable body connector and a power line connector, the leakage cable body connector comprises an inner conductor connecting column, an insulating sleeve and an outer conductor connecting column, the inner conductor connecting column is connected with an inner conductor (11), the insulating sleeve covers the joint of the inner conductor connecting column and the inner conductor (11), and the outer conductor connecting column is connected with an outer conductor (13); the power cord connector comprises a wire connecting column, an insulation sleeve I, a shielding layer connecting column and an insulation sleeve II, wherein the wire connecting column is connected with a wire (21), the insulation sleeve I covers the connecting position of the wire connecting column and the wire (21), the shielding layer connecting column is connected with a shielding layer (23), and the insulation sleeve II covers the connecting position of the shielding layer connecting column and the shielding layer (23).

4. The signal amplification structure of claim 3, wherein: the inner conductor connecting column is connected with the inner conductor (11) through welding or bolts, and the outer conductor connecting column is connected with the outer conductor (13) through welding or bolts; the lead connecting column is connected with the lead (21) through welding or bolts, and the shielding layer connecting column is connected with the shielding layer (23) through welding or bolts.

5. The signal amplification structure of claim 4, wherein: the diameter of the bidirectional amplifier is equal to that of the leakage cable body (1).

6. The signal amplification structure of claim 5, wherein: the sheath (4) wraps the leaky cable body (1), the power line (2) and the bidirectional amplifier together.

7. The signal amplification structure of claim 6, wherein: the bidirectional amplifier is provided with a radiating pipe, the inner surface of the radiating pipe is arranged on the bidirectional amplifier, and the outer surface of the radiating pipe extends out of the sheath (4).