CN215988205U

CN215988205U - Flame-retardant, explosion-proof, rat-proof and anti-interference shielding RS485 communication line

Info

Publication number: CN215988205U
Application number: CN202121850027.1U
Authority: CN
Inventors: 陈海萍; 邵士东; 张旭; 杨才岭
Original assignee: JIANGSU JIANGYANG CABLE CO Ltd
Current assignee: JIANGSU JIANGYANG CABLE CO Ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-03-08
Anticipated expiration: 2031-08-10

Abstract

The utility model relates to a flame-retardant, explosion-proof, rat-proof and anti-interference shielding RS485 communication line. The communication line include cable core and oversheath, the cable core in be provided with two insulation core, insulation core include the conductor and set up the insulating layer outside the conductor, two insulation core set up outward and constitute the cable core around the band, set up the shielding layer around the band outward, the shielding layer outside set up the inner sheath, the inner sheath set up the armor outward, the armor outside set up the oversheath. The cable has good fireproof and flame-retardant performances, is prevented from being shielded and interfered by an external electromagnetic field, ensures the use stability of the cable, effectively prevents high-temperature oxidation, prolongs the service life of the cable, ensures the tensile property of RS485, prevents the cable from being bitten by mice, and simultaneously enhances the anti-interference performance.

Description

Flame-retardant, explosion-proof, rat-proof and anti-interference shielding RS485 communication line

Technical Field

The utility model relates to a special cable, in particular to a flame-retardant, explosion-proof, rat-proof and anti-interference shielding RS485 communication line.

Background

RS485 is a standard defined to balance the electrical characteristics of drivers and receivers in digital multipoint systems, which is defined by the telecommunications industry association and the electronics industry consortium. The digital communication network using the standard can effectively transmit signals under long-distance conditions and in environments with large electronic noise.

In the middle of the actual construction, because walk the line and all walk through the pipeline, the construction side is convenient when having, directly ties up RS485 signal line and power cord together, because the forceful electric power has strong electromagnetic signal and disturbs the weak current to lead to 485 signal unstability, lead to communication unstability. Therefore, an anti-severe interference and rat-proof RS485 communication line needs to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flame-retardant, explosion-proof, rat-proof and anti-interference shielding RS485 communication line, which aims to solve the problems in the prior art.

The technical scheme of the utility model is as follows: the utility model provides a fire-retardant explosion-proof anti-interference shielding RS485 communication line of protection against rodents, the communication line include cable core and oversheath, the cable core in be provided with two insulation core, insulation core include the conductor and set up the insulating layer outside the conductor, two insulation core set up outward around the band and constitute the cable core, around the outband set up the shielding layer, the shielding layer set up the inner sheath outward, the inner sheath set up the armor outward, the armor set up the oversheath outward.

Preferably, the conductor is a category 5 tin-plated soft copper conductor meeting the requirements of GB/T3956-.

Preferably, the wrapping tape is a two-layer low-smoke halogen-free flame-retardant wrapping tape.

Preferably, the shielding layer comprises a first shielding layer and a second shielding layer, the first shielding layer is an aluminum foil shielding layer, and the second shielding layer is a tinned copper wire braided shielding layer.

Preferably, the metal surface of the first shielding layer faces the second shielding layer, and the metal surface is in full contact with the tinned copper wires of the second shielding layer.

Preferably, the first shielding layer is lapped in an overlapping mode, and the lapping and covering rate is equal to or larger than 25%; the weaving density of the second shielding layer is larger than 90%, a strand of tinned copper drainage wire is dragged in during weaving, and the drainage wire is arranged on one side, facing the first shielding layer, of the second shielding layer.

Preferably, the inner sheath is a flame-retardant polyvinyl chloride inner sheath; the outer sheath is a flame-retardant polyvinyl chloride outer sheath.

Preferably, the armor layer is a galvanized steel wire woven armor layer.

The utility model has the beneficial effects that:

1) the conductor adopts a category 5 tinned soft copper conductor which meets the requirements of GB/T3956-;

2) two layers of low-smoke halogen-free flame-retardant tapes are wrapped outside the cable core, so that the fireproof and flame-retardant performances of the cable are improved;

3) the double-layer shielding structure is adopted, so that the cable is prevented from being shielded and interfered by an external electromagnetic field, and the use stability of the cable is ensured;

4) the armor layer is armored by weaving tinned steel wires, so that the tensile property of RS485 is guaranteed, the cable is prevented from being bitten by mice, and the anti-interference property is enhanced;

5) the outer sheath is made of flame-retardant polyvinyl chloride material, and the color of the outer sheath is blue, so that the environmental requirements of explosion-proof places are met.

Drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure, 1 is a drainage wire, 2 is a conductor, 3 is an insulating layer, 4 is a wrapping tape, 5 is a first shielding layer, 6 is a second shielding layer, 7 is an inner sheath, 8 is an armor layer, and 9 is an outer sheath.

Detailed Description

The utility model provides a fire-retardant explosion-proof anti-interference shielding RS485 communication line of protection against rodents, the communication line include cable core and oversheath 7, the cable core in be provided with two insulation core, insulation core include conductor 2 and set up insulating layer 3 outside conductor 2, two insulation core set up outward and constitute the cable core around band 4, around band 4 outer shield layers that set up, the shield layer outside set up inner sheath 7, inner sheath 7 outer set up

armor

8, 8 outer set up oversheath 9 of armor.

The conductor 2 is a category 5 tin-plated soft copper conductor 2 meeting the requirements of GB/T3956-;

the insulating layer 3 is a polyethylene insulating layer.

The wrapping tape 4 is two layers of low-smoke halogen-free flame-retardant wrapping tapes, so that the fireproof and flame-retardant performances of the cable are improved;

the shielding layer comprises a first shielding layer 5 and a second shielding layer 6, the first shielding layer 5 is an aluminum foil shielding layer, and the second shielding layer 6 is a tinned copper wire woven shielding layer.

The metal surface of the first shielding layer 5 faces the second shielding layer 6, and the metal surface is in full contact with a plurality of tinned copper wires of the second shielding layer 6.

The first shielding layer 5 is lapped in an overlapping way, and the lapping and covering rate is equal to or larger than 25%; the weaving density of the second shielding layer 6 is larger than 90%, a strand of tinned copper drainage wire 1 is dragged in during weaving, and the drainage wire 1 is arranged on one side, facing the first shielding layer 5, of the second shielding layer 6.

The double-layer shielding structure is adopted, so that the cable is prevented from being shielded and interfered by an external electromagnetic field, and the use stability of the cable is ensured;

the inner sheath 7 is a flame-retardant polyvinyl chloride inner sheath; the outer sheath 9 is a flame-retardant polyvinyl chloride outer sheath, is blue in color, and meets the environmental requirements of explosion-proof places.

The armor layer 8 is a galvanized steel wire woven armor layer, so that the tensile property of RS485 is guaranteed, the cable is prevented from being bitten by mice, and the anti-interference performance is enhanced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire-retardant explosion-proof anti-interference shielding RS485 communication line of mouse which characterized in that: the communication line include cable core and oversheath (9), the cable core in be provided with two insulation core, insulation core include conductor (2) and set up insulating layer (3) outside conductor (2), two insulation core set up outward and constitute the cable core around band (4), around band (4) set up the shielding layer outward, the shielding layer set up inner sheath (7) outward, inner sheath (7) set up armor (8) outward, armor (8) set up oversheath (9) outward.

2. The flame-retardant, explosion-proof, mouse-proof and anti-interference shielding RS485 communication line according to claim 1, characterized in that: the conductor (2) is a category 5 tinned soft copper conductor meeting the requirements of GB/T3956-.

3. The flame-retardant, explosion-proof, mouse-proof and anti-interference shielding RS485 communication line according to claim 1, characterized in that: the wrapping tape (4) is a two-layer low-smoke halogen-free flame-retardant wrapping tape.

4. The flame-retardant, explosion-proof, mouse-proof and anti-interference shielding RS485 communication line according to claim 1, characterized in that: the shielding layer comprises a first shielding layer (5) and a second shielding layer (6), the first shielding layer (5) is an aluminum foil shielding layer, and the second shielding layer (6) is a tinned copper wire woven shielding layer.

5. The flame-retardant, explosion-proof, mouse-proof and anti-interference shielding RS485 communication line according to claim 4, characterized in that: the metal surface of the first shielding layer (5) faces the second shielding layer (6), and the metal surface is in full contact with a plurality of tinned copper wires of the second shielding layer (6).

6. The flame-retardant, explosion-proof, mouse-proof and anti-interference shielding RS485 communication line according to claim 4, characterized in that: the first shielding layer (5) is lapped in an overlapping way, and the lapping and covering rate is equal to or larger than 25%; the weaving density of the second shielding layer (6) is larger than 90%, a strand of tinned copper drainage wire (1) is dragged in during weaving, and the drainage wire (1) is arranged on one side, facing the first shielding layer (5), of the second shielding layer (6).

7. The flame-retardant, explosion-proof, mouse-proof and anti-interference shielding RS485 communication line according to claim 1, characterized in that: the inner sheath (7) is a flame-retardant polyvinyl chloride inner sheath; the outer sheath (9) is a flame-retardant polyvinyl chloride outer sheath.

8. The flame-retardant, explosion-proof, mouse-proof and anti-interference shielding RS485 communication line according to claim 1, characterized in that: the armor layer (8) is a galvanized steel wire woven armor layer.