CN202159507U - Insulation foaming ten-thousand MHz data cable - Google Patents

Abstract

The utility model relates to a data cable in the field of electronic information technology, in particular to a data cable with high shielding performance, which is used for high-speed transmission of data signals such as audio, video, an image and the like with extra large capacity. An insulation foaming ten-thousand MHz data cable consists of a PVC (polyvinyl chloride) protective layer, a total shielding layer and four groups of wire pairs, wherein the PVC protective layer is arranged at the outer layer of the data cable, the total shielding layer is arranged in the PVC protective layer, a tearing rope is arranged between the total shielding layer and the PVC protective layer, the four groups of wire pairs are arranged in the total shielding layer and each group of wire pair is respectively composed of two lead wires and a divided shielding layer , the divided shielding layer package the two lead wires, and the lead wire comprises a copper conductor, a first solid PE (polyethylene) insulating layer, a high physical foaming froth layer and a second solid PE insulating layer from inside to outside sequentially. The data cable in the utility model can effectively reduce loss of signals in the conductor transmission and improve the general anti-electromagnetic interference capacity and anti-signal-crossing performance of a product.

Description

A kind of insulation 10,000,000,000 data cables that foam

Technical field

The utility model relates to the data cable of electronic information technical field, relates in particular to the high shielding properties data cable of the high-speed transfer of data-signals such as the audio frequency that is used for vast capacity, video, image.

Background technology

Along with the continuous development of information network, information communication is more and more frequent, and the information exchange capacity is also increasing.Data cable is the important transmission medium of the network information, is faced with new technological change and innovation, will improve transmission rate on the one hand, satisfies the transmission and the exchange of big capacity information, will improve transmission stability on the other hand, guarantees the quality of message transmission.

Ethernet came out over more than 30 year; Network transmission speed has improved nearly thousand times; FDX Ethernet (10Mbps), 100 m ethernet (100Mbps), 802.3u Fast Ethernet (1000Mbps) have been experienced; Ten thousand mbit ethernets (10Gbps) till now, also will develop to 100,000 mbit ethernets (100Gbps) future.See that from present information transmission technology development ten thousand mbit ethernets will be the direction and the trend of the networking coming years, the demand that in the coming five years, is fit to the high-speed data transmission cable of ten thousand mbit ethernets will increase fast.

The development of the research and development of data cable and manufacturing and Ethernet synchronously, manufacturer successively releases 3 types (10Mbps) 5 types (100Mbps) and surpasses 5 types and 6 types (1000Mbps), for information network construction and upgrading play an important role.For adapting to the application of ten thousand mbit ethernets; Converge and group system like high-speed data communication network, data center; The networking of vast capacity storage; Financial transaction system, government, medical treatment are protected the supercomputing research system build field and university, and have higher requirement to the shielding properties of data cable in fields such as the very high military affairs of shielding requirements, Aeronautics and Astronautics.

And existing 6 types of its transmission frequencies of data cable widely applying are relatively low, and therefore in product structure design, heart yearn is generally the solid plastic insulation, outside non-shielding or the single-layer metal paper tinsel shielding construction of adopting.Such structural design when transmission bandwidth surpasses 250MHz, is difficult to guarantee that product has performances such as good electric and transmission performance and anti-electromagnetic interference.

The utility model content

In order to satisfy the application requirements of the big capacity of data cable, two-forty, and solve inside and outside electro permanent magnetic material interference problem of cable, make cable have the flexible ability of better antinoise signal string, reduce the phenomenons such as error code in the transfer of data.The purpose of the utility model provides a kind of insulation 10,000,000,000 data cables that foam, and this data cable has reduced the loss of signal in the conductor transmission effectively, has improved the whole anti-electromagnetic interference capability and the antinoise signal crosstalk performance of product.

In order to realize above-mentioned purpose, the technical scheme below the utility model has adopted:

A kind of insulation 10,000,000,000 data cables that foam; This data cable by low smoke and zero halogen material protection layer, total screen and four groups of lines to forming; Low smoke and zero halogen material protection layer is positioned at the skin of data cable, and total screen is arranged in the low smoke and zero halogen material protection layer, between total screen and low smoke and zero halogen material protection layer, is provided with and tears rope; Described four groups of lines are to being arranged in total screen; Four groups of lines are to being made up of two leads and sub-shield respectively, sub-shield with two wrapped in wire together, described lead is followed successively by copper conductor, the first solid PE insulating barrier, high physical foaming froth bed and the second solid PE insulating barrier from inside to outside.

As preferably, above-mentioned total screen selects for use area coverage greater than 40% wire braid.Preferred as again, described total screen is selected the wire braid of area coverage greater than 40%-60% for use.As most preferably, it is 45% wire braid that described total screen is selected area coverage for use.

As preferably, above-mentioned sub-shield is selected the super thin metal paper tinsel for use.

As preferably, above-mentioned high physical foaming froth bed is the froth bed of gas foam degrees 50%-70%.Preferred as again, described high physical foaming froth bed is the froth bed of gas foam degrees 60%.

The utility model has following characteristics owing to adopted above-mentioned technical scheme:

1, the purpose of design high physical foaming insulation system; Change the insulation system of conductor, changed three layers of (solid PE layer+froth bed+solid PE layer) insulating barrier into by the solid PE insulation of individual layer and form, reduced the dielectric constant of dielectric; Thereby the insulation property of conductor have been improved; Reduce the loss of signal in the conductor transmission effectively, reduced the delay distortion of transfer of data, thereby satisfied the application requirements of 7 types of big capacity of data cable, two-forty.

2, adopt the total points double layer screen; The sub-shield of internal layer can solve the inner line of cable to a crosstalk problem; Add the double layer screen that outer field total screen constitutes; Solve inside and outside electromagnetic interference problem of cable, effectively improved the whole anti-electromagnetic interference capability and the antinoise signal crosstalk performance of product, reduce the phenomenons such as error code in the transfer of data.

The utility model product the key technical indexes:

(1) decay (ATT) :≤50.1dB/100m (600MHz)

(2) near-end crosstalk power with (PSNEXT): >=58dB/100m (600MHz)

(3) characteristic impedance (NEXT) 100 ± 15 Ω (4-100MHz)

100±22Ω(100-200MHz)

100±25Ω(200-600MHz)

(4) return loss (RL): >=17.3dB/100m (600MHz)

Description of drawings

Fig. 1 is the structural representation of the utility model

Embodiment

Below in conjunction with accompanying drawing the embodiment of the utility model is done a detailed description.

A kind of insulation as shown in Figure 1 10,000,000,000 data cables that foam; This data cable is made up of 3 low smoke and zero halogen material protection layer 1, total screen 2 and four groups of lines; Low smoke and zero halogen material protection layer 1 is positioned at the skin of data cable; Total screen 2 is arranged in the low smoke and zero halogen material protection layer 1, selects the wire sheathing of area coverage 45% for use, between total screen 2 and low smoke and zero halogen material protection layer 1, is provided with one and tears rope 10.Described four groups of lines are arranged in total screen 23; Four groups of lines are made up of two leads 5 and sub-shield 4 respectively 3; Sub-shield 4 is selected the super thin metal paper tinsel for use; Sub-shield 4 is bundled together two leads 5, and described lead 5 is followed successively by the solid PE insulating barrier of copper conductor 6, first 7, high physical foaming froth bed 8 and the second solid PE insulating barrier 9 from inside to outside, and high physical foaming alveolar layer 8 is the froth bed of gas foam degrees 60%.

Claims (7)

1. insulation foaming 10,000,000,000 data cables; It is characterized in that: this data cable is made up of (3) low smoke and zero halogen material protection layer (1), total screen (2) and four groups of lines; Low smoke and zero halogen material protection layer (1) is positioned at the skin of data cable, and total screen (2) is arranged in the low smoke and zero halogen material protection layer (1), between total screen (2) and low smoke and zero halogen material protection layer (1), is provided with and tears rope (10); Described four groups of lines are arranged in total screen (2) (3); Four groups of lines are made up of two leads (5) and sub-shield (4) respectively (3), and sub-shield (4) is bundled together two leads (5), and described lead (5) is followed successively by copper conductor (6) from inside to outside; The first real core PE insulating barrier (7), high physical foaming froth bed (8) and the second solid PE insulating barrier (9).

2. described a kind of insulation 10,000,000,000 data cables that foam according to claim (1) is characterized in that: total screen (2) selects for use area coverage greater than 40% wire braid.

3. described a kind of insulation 10,000,000,000 data cables that foam according to claim (2) is characterized in that: it is 40%～60% wire braid that total screen (2) is selected area coverage for use.

4. described a kind of insulation 10,000,000,000 data cables that foam according to claim (3) is characterized in that: it is 45% wire braid that total screen (2) is selected area coverage for use.

5. described a kind of insulation 10,000,000,000 data cables that foam according to any claim of claim 1～4, it is characterized in that: the super thin metal paper tinsel is used in sub-shield choosing (4).

6. described a kind of insulation 10,000,000,000 data cables that foam according to any claim of claim 1～4, it is characterized in that: high physical foaming froth bed (8) is the froth bed of gas foam degrees 50%～70%.

7. described a kind of insulation 10,000,000,000 data cables that foam according to claim (6), it is characterized in that: high physical foaming froth bed (8) is the froth bed of gas foam degrees 60%.

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