CN204904886U - Cable of nai low -temperature flexibility data transmission - Google Patents
Cable of nai low -temperature flexibility data transmission Download PDFInfo
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- CN204904886U CN204904886U CN201520676654.6U CN201520676654U CN204904886U CN 204904886 U CN204904886 U CN 204904886U CN 201520676654 U CN201520676654 U CN 201520676654U CN 204904886 U CN204904886 U CN 204904886U
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- low temperature
- cable
- data cable
- flexible data
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Abstract
The utility model discloses a cable of nai low -temperature flexibility data transmission, including the cable core to and the cross of filling in the cable core separates the frame, and four couple of constituting the cable core is located four separated region that the frame is separated to the cross respectively to the group the outside of cable core from the lining outwards in proper order the cladding have waterproof layer, shielding layer, heat preservation and cold -resistant protective layer, be equipped with the earial drainage line between waterproof layer and the shielding layer. To the group by two insulated conductors each other the transposition form, this insulated conductors is including the metal pencil that is formed by a plurality of metal monofilament transposition, it has the pencil insulating layer to cover in this metal pencil outsourcing. The transposition pitch diameter of metal pencil is than being 14 - 18. This data transmission cable injustice has fabulous low temperature environment adaptability and good compliance, has signal transmission safe and reliable's characteristics moreover.
Description
Technical field
The utility model relates to a kind of data cable, particularly relates to a kind ofly can run under-40 DEG C of low temperature environments and have the data cable well laying flexibility.
Background technology
Along with the development of society, digital communication is own stepped into information, digitized epoch also, network service science and technology just with unprecedented speed to darker, wider level and field development.Adjoint network communication universal, the requirement of cable transmission is also more and more higher, and also great changes will take place for its environment for use, condition, not only requires that communication cable is applicable to normal temperature, hot environment, also requires that data cable can normal transmission signal at low ambient temperatures.Such as in northern frore area, the operating ambient temperature of its data cable lowly can reach-40 DEG C, and under the low temperature environment that freezer etc. is special, the operational environment of automatic control system and network transmission system is often below-20 DEG C, even lower.
Existing data cable is often based on carrying out under normal temperature service condition manufacturing and designing, its data cable lay ambient temperature 0 DEG C and more than, when environment for use temperature is lower than 0 DEG C, cable jacket layer there will be embrittlement or cracking, data cable is not only made to lose the most basic insulation property, and the construction of cable is changed, directly affect the electrical performance indexes such as cross-talk, decay, the transmission security of cable and transmission speed are reduced.Moreover existing data cable anti-bending strength is not enough, the twisting pitch design of conductor or single line is unreasonable, inconvenient data cable laying in small space or complex course.These defects of available data cable seriously limit the suitable application area of data cable, cannot meet safe handling under cryogenic and normal work.
Utility model content
For the above-mentioned technical problem existing for prior art, technical problem to be solved in the utility model is to provide one can adapt to low temperature environment, and has the Low temperature-resistanflexible flexible data cable of improved flexibility.
In order to solve the problems of the technologies described above, Low temperature-resistanflexible flexible data cable of the present utility model, comprise cable core, and the cross separation frame be filled in cable core, four couple forming cable core lays respectively in four separated regions of cross separation frame to line group, is outwards coated with watertight composition, screen, heat-insulation layer and cold-resistant protective layer successively in the outside of described cable core from inner; Earial drainage line is provided with between described watertight composition and screen.
After adopting said structure, because four couple of cable core lays respectively in four separated regions of cross separation frame to line group, this structure is when ensureing the outside diameter of cable, distance between increasing line group, the support fixation of separation frame, make again line group adessive firmly stable outward, can not form the displacement vibration to line group, the construction of cable can keep the location status of robust; Separation frame also plays and prevents mutually nested between line group simultaneously, and avoid the mutual intrusion interference to line group, this reliable and stable version ensure that the stability of cable parameters, and the operating frequency of cable is improved, and data transmission bauds is accelerated.Again owing to being coated with heat-insulation layer at the watertight composition of cable core and screen, this heat-insulation layer can block low ambient temperature even ultralow temperature to the intrusion of cable core and watertight composition, screen, in guarantee cable core, temperature is stable, to guarantee for transfer of data cable core transmitting digital information safely and reliably.More because the outer jacket of transmission cable is cold-resistant oversheath, this cold-resistant oversheath adopts cold resistant pvc material, under low temperature and cold environment, cable jacket still has good pliability, outer jacket both there will not be brittle phenomenon, sheath is more there will not be to ftracture, thus meet cable normal use at low ambient temperatures, and this cable flexibility is good, cable laying operation convenient.Watertight composition prevents moisture, corrosive gas and moisture from invading cable core, and screen then effectively improves overall anti-electromagnetic interference capability and the cross-talk resistant performance of cable; Earial drainage line had both had break alarm function, can ensure again cable along long to equipotential, be conducive to improving that cable is anti-interference, the electric property of cross-talk resistant.
Further execution mode of the present utility model, describedly forms by two insulated single wires are mutually stranded line group, and this insulated single wire includes by the stranded wire bundle of some metal monofilament, is coated with wire harness insulating barrier in this wire bundle.The stranded lay ratio of described wire bundle is 14-18.Wire bundle structure is adopted to the metallic conductor of line group, and this wire bundle is made up of some metal monofilament, this structure can greatly reduce the diameter of single metal wire, not only be beneficial to the stressed in the same size of in stranding process every one metal wire, and this attenuate structure substantially increases the flexibility of whole cable.Rational stranded lay ratio makes wire harness both have stranded tightness, has again good bending flexibility.
Preferred implementation of the present utility model, the described twisting pitch to line group is 12mm-18mm, and the twisting pitch of adjacent two pairs of line groups is different.The twisting pitch of described cable core is 70mm-100mm.Insulated single wire twisting pitch in this structure and cable core twisting pitch not only make cable have the mechanical performances such as enough stretch-prooves, resist bending, and the stability of the every structural parameters of cable can be guaranteed, the operating frequency of data cable is improved, and data transmission bauds is accelerated.
Optimal way of the present utility model, described heat-insulation layer is nonwoven fabrics looping layer or bafta layer.Nonwoven fabrics looping or bafta layer is used to have fabulous heat-insulating property and cold-resistant effect.
Preferred implementation of the present utility model, described cold-resistant protective layer is that cold-resistant-40 DEG C of polyvinyl chloride extrude layer.The thickness of described cold-resistant protective layer is 0.5mm-0.7mm.This materials'use effect stability, can meet the use of ambient temperature-40 DEG C, cracking phenomena can not occur.
Further, described screen is tin plated steel wire braid.Both there is good shielding, there is again bending flexibility preferably.
Further, described watertight composition is that polyester belt drags covering.Effect stability processing and fabricating is convenient.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model Low temperature-resistanflexible flexible data cable is described further.
Fig. 1 is the structural representation of a kind of embodiment of the utility model Low temperature-resistanflexible flexible data cable.
In figure, 1-cable core, 2-to line group, 21-wire harness insulating barrier, 22-wire bundle, 23-metal monofilament, 3-cross separation frame, 4-watertight composition, 5-screen, 6-heat-insulation layer, 7-cold-resistant oversheath, 8-earial drainage line.
Embodiment
In the Low temperature-resistanflexible flexible data cable shown in Fig. 1, the cable core 1 of transmission cable forms to line group 2 is stranded by four, including four to the twisting pitch of the cable core 1 to line group 2 is 80mm, and this pitch should preferably between 70mm-100mm according to cable service condition and designing requirement certainly.Every a pair pair of line group 2 forms by two insulated single wires are mutually stranded, and the twisting pitch of four couples to line group of composition cable core 1 is different, and in the present embodiment, four are followed successively by 17.8mm, 11.5mm, 15.4mm, 12.7mm to the twisting pitch of line group.The twisting pitch of two insulated single wires therefore in often pair of line group should preferably between 12mm-18mm, as long as keep the twisting pitch of adjacent two pairs of line groups different.
Insulated single wire comprises by the stranded wire bundle 22 of metal monofilament 23, and the wire harness insulating barrier 21 be coated on outside wire bundle 22, the metal monofilament 23 of composition wire bundle 22 has 7, wherein one is positioned at core, the six roots of sensation is stranded around this root in addition, these 7 metal monofilament 23 are the soft round copper wire of diameter 0.20mm, direction of lay be S to, twisting pitch footpath is than selecting between 14-18.
Cross separation frame 3 is also filled with in cable core 1, separate the mutual square crossing of fin for four of this cross separation frame 3, the thickness of fin is 0.6mm, the external diameter of four flap apex place circles is 5.0mm, four fins of mutual square crossing form four separated regions, are equipped with a pair line group 2 in each separated region.
Outwards watertight composition 4 is coated with successively, screen 5, heat-insulation layer 6 and cold-resistant oversheath 7 from inner in the outside of cable core 1.Watertight composition is that one deck drags the water-proof polyester band of bag to drag covering outside cable core 1, and the thickness of this polyester belt is 0.02mm.Screen 5 is tincopper fuse wire braided armor, and aluminium base thickness also can be adopted to be not less than 0.043mm one side aluminium foil and carry out the vertical bag of overlap, its vertical bag width is not less than 15% of bandwidth.Heat-insulation layer 6 take nonwoven fabrics as the nonwoven fabrics coating layer of the coated formation of material, the bafta layer that heat-insulation layer 6 can also be is material with cotton chemical fibre, natural cotton.The oversheath that cold-resistant oversheath 7 extrudes with cold-resistant-40 DEG C of polyvinyl chloride cable sheath materials, the thickness of this cold-resistant oversheath 7 is 0.55mm, and preferably its thickness is 0.5mm-0.7mm.Between watertight composition 2 and screen 5, be provided with an earial drainage line 8, earial drainage line 8 is the tinned wird of diameter 0.5mm, and earial drainage line 8 is arranged along the length direction of cable.
Be more than illustrate the utility model specific embodiment and illustrate, but the utility model is not restricted to above example, all equivalent transformations done according to the utility model general principle, all should within protection range of the present utility model.
Claims (10)
1. a Low temperature-resistanflexible flexible data cable, comprise cable core (1), and the cross separation frame (3) be filled in cable core (1), four couple forming cable core (1) lays respectively in four separated regions of cross separation frame (3) line group (2), it is characterized in that: be outwards coated with watertight composition (4), screen (5), heat-insulation layer (6) and cold-resistant protective layer (7) successively in the outside of described cable core (1) from inner; Earial drainage line (8) is provided with between described watertight composition (4) and screen (5).
2. Low temperature-resistanflexible flexible data cable according to claim 1, it is characterized in that: described line group (2) to be formed by two insulated single wires are mutually stranded, this insulated single wire includes by the stranded wire bundle (22) of some metal monofilament (23), is coated with wire harness insulating barrier (21) in this wire bundle (22).
3. Low temperature-resistanflexible flexible data cable according to claim 2, is characterized in that: the stranded lay ratio of described wire bundle (22) is 14-18.
4. the Low temperature-resistanflexible flexible data cable according to claim 1,2 or 3, is characterized in that: the described twisting pitch to line group (2) is 12mm-18mm, and the twisting pitch of adjacent two pairs of line groups is different.
5. the Low temperature-resistanflexible flexible data cable according to claim 1,2 or 3, is characterized in that: the twisting pitch of described cable core (1) is 70mm-100mm.
6. the Low temperature-resistanflexible flexible data cable according to claim 1,2 or 3, is characterized in that: described heat-insulation layer (6) is nonwoven fabrics looping layer or bafta layer.
7. the Low temperature-resistanflexible flexible data cable according to claim 1,2 or 3, is characterized in that: described cold-resistant protective layer (7) is that cold-resistant-40 DEG C of polyvinyl chloride extrude layer.
8. Low temperature-resistanflexible flexible data cable according to claim 7, is characterized in that: the thickness of described cold-resistant protective layer (7) is 0.5mm-0.7mm.
9. Low temperature-resistanflexible flexible data cable according to claim 1, is characterized in that: described screen (5) is tin plated steel wire braid.
10. Low temperature-resistanflexible flexible data cable according to claim 1, is characterized in that: described watertight composition (4) drags covering for polyester belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520676654.6U CN204904886U (en) | 2015-09-04 | 2015-09-04 | Cable of nai low -temperature flexibility data transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520676654.6U CN204904886U (en) | 2015-09-04 | 2015-09-04 | Cable of nai low -temperature flexibility data transmission |
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| Publication Number | Publication Date |
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| CN204904886U true CN204904886U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520676654.6U Active CN204904886U (en) | 2015-09-04 | 2015-09-04 | Cable of nai low -temperature flexibility data transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735654A (en) * | 2020-12-16 | 2021-04-30 | 威海市泓淋电力技术股份有限公司 | Low temperature resistant compressor special cable with carbon fiber insulation and sheath |
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2015
- 2015-09-04 CN CN201520676654.6U patent/CN204904886U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735654A (en) * | 2020-12-16 | 2021-04-30 | 威海市泓淋电力技术股份有限公司 | Low temperature resistant compressor special cable with carbon fiber insulation and sheath |
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