CN204632442U - A kind of three coaxial phase-compensated cables - Google Patents
A kind of three coaxial phase-compensated cables Download PDFInfo
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- CN204632442U CN204632442U CN201520372692.2U CN201520372692U CN204632442U CN 204632442 U CN204632442 U CN 204632442U CN 201520372692 U CN201520372692 U CN 201520372692U CN 204632442 U CN204632442 U CN 204632442U
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Abstract
The utility model relates to technical field of communication cables, and open a kind of three coaxial phase-compensated cables, comprise metallic inner conductor, insulating barrier, lapping layer, back-up coat, braid and restrictive coating from inside to outside successively.Compared with prior art, machinery steady phase performance can be ensured when the cable that the utility model provides uses under severe situation, meanwhile, improve cable standing wave and loss stability greatly, improve the linear transfer performance of cable, ensure that the steady phase behaviour of cable.
Description
Technical field
The utility model relates to radio frequency and microwave multi-carrier communication field, relates to a kind of novel fire resistant, vibration resistance, bend resistance, low standing wave cable, is specially a kind of three coaxial phase-compensated cables.
Background technology
Along with the high speed development of the communication technology and equipment, PTFE insulation phase-compensated coaxial cable is with the steady phase behaviour of the temperature of its excellence and the steady phase behaviour of machinery, be widely used in machine system amplitude-phase consistency being had to requirement, as systems such as early warning, guidance, radar and information channel, satellite communication, microwave tests.
Typical PTFE insulation phase-compensated coaxial cable is divided into two kinds because its insulation system is different, a kind of for adopting low density PTFE powder through pushing, and adopts and do not sinter or half sintered form; Another kind of for adopting ePTFE belt wrapped, then be aided with outer conductor formation composite construction.The former, although the production efficiency of improve, but owing to being push not sinter, molecular separating force is less, when being subject to larger power or vibration frequency is very fast, there will be stress cracking phenomenon, destroy electric property, Long-Time Service, dangerous, such as on helicopter equipment, be strictly prohibited and use this type of cable.The latter, owing to adopting wrapped mode, there is gap at Coating combination place, is in dynamic vibration for a long time, can affect standing wave, steady equal electric property, very large on the quality conformance impact of its Long-Time Service.The production efficiency of this lapped insulation is too low simultaneously, and cost is too high.
Due to the particularity of use occasion, in the urgent need to a kind of cable meeting vibration resistance, bend resistance, low standing wave simultaneously, under especially fast in dynamic vibration frequency or other harsh conditions, the coaxial cable of its electrical characteristic, especially steady phase behaviour can also be ensured.
Utility model content
The utility model is for above-mentioned Problems existing, provide a kind of three coaxial phase-compensated cables, the steady phase performance of machinery when using under severe situation can be ensured, improve cable standing wave and loss stability greatly, improve the linear transfer performance of cable, ensure that the steady phase behaviour of cable.
The utility model for achieving the above object, takes following technical scheme to be achieved:
A kind of three coaxial phase-compensated cables, comprise metallic inner conductor, insulating barrier, lapping layer, back-up coat, braid and restrictive coating from inside to outside successively.
Preferably, described inner wire is synnema type inner wire.
Preferably, described lapping layer thickness is 0.01mm ~ 0.1mm.
Preferably, described lapping layer is silver-plated copper strips lapping layer or copper strips lapping layer.
Preferably, described lapping layer is self-adhering-type metal lapping layer.
Preferably, described lapping layer is plain edition metal lapping layer.
Preferably, described insulating barrier is low-density lightweight PTFE powder insulating barrier.
Preferably, described lapping layer Duplication is 40% ~ 80%.
Preferably, described back-up coat thickness is 0.05mm ~ 0.12mm.
Preferably, described braid is silver-gilt copper wire braid, and described braid count is more than 95%.
Compared with prior art, the beneficial effects of the utility model are as follows:
The utility model provides a kind of three coaxial phase-compensated cables, one deck back-up coat is increased in lapping layer outside, pass through extrusioning shaping, reinforce stabilization effect is played to cable configuration, constitute three novel coaxial configurations, do not need to revise connector size supporting with it, can directly mate with former equipment or terminal, can effectively prevent from vibrating and bend the destruction to the construction of cable and shape, the stress that release is insulated in process of production and around-packing technology produces, ensure the steady phase performance of machinery when this cable uses under severe situation, great raising cable standing wave and loss stability, improve the linear transfer performance of cable, ensure that the steady phase behaviour of cable.
Accompanying drawing explanation
The schematic cross-section of a kind of three coaxial phase-compensated cables in Fig. 1 the utility model embodiment;
The schematic diagram of a kind of three coaxial phase-compensated cables in Fig. 2 the utility model embodiment;
The technological process of production schematic diagram of a kind of three coaxial phase-compensated cables in Fig. 3 the utility model embodiment;
The damage curve figure of a kind of three coaxial phase-compensated cables in Fig. 4 the utility model embodiment;
Phase angle variations curve chart after a kind of three coaxial phase-compensated cable bending vibrations in Fig. 5 the utility model embodiment;
In Fig. 6 the utility model embodiment, a kind of three coaxial phase-compensated cable phase places vary with temperature curve chart.
Embodiment
The utility model embodiment provides a kind of three coaxial phase-compensated cables, when can ensure to use under severe situation, and the steady phase performance of machinery of cable, simultaneously, great raising cable standing wave and loss stability, improve the linear transfer performance of cable, ensure that the steady phase behaviour of cable.
For making utility model object of the present utility model, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, the embodiments described below are only the utility model part embodiments, and the embodiment of not all.Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Below in conjunction with specific embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1, a kind of three coaxial phase-compensated cables, comprise metallic inner conductor 1, insulating barrier 2, lapping layer 3, back-up coat 4, braid 5 and restrictive coating 6 from inside to outside successively.
In above-mentioned triaxial cable, for improving the bending property of cable, metallic inner conductor 1 selects synnema type inner wire, in order to replace single bare conductor.Tightly the insulating barrier 2 of clad metal inner wire 1 adopts low density PTFE dispersion resin to push, then use and do not sinter or half sintering process, and do not add extra shaping additive, namely heart yearn push shaping after, volatilize boosting solvent by volatilization case, in whole process, set temperature does not exceed the sintering temperature of PTFE, like this, just reduce the weight of cable, significantly improve the drain performance of cable and the consistency of quality.
Lapping layer 3 is coated on the outside of insulating barrier, and its thickness is 0.01mm ~ 0.12mm, and Duplication is 40% ~ 80%, can select silver-plated copper strips lapping layer or copper strips lapping layer according to actual needs, also can select whether self-adhesion.Select plain edition metal lapping layer material webs, be conducive to the installation of joint; Select the lapping layer material webs of self-adhering-type, wrapped type outer conductor can be better made to form unified structure, effective suppression is in bending or actual dynamically use procedure, producing micrometric displacement because of relative sliding between wrapped belt makes whole cable loss increase, destroy the defect of the steady phase behaviour of whole cable, namely ensure that consistency and the stability of whole cable axial arrangement.Facts have proved, when the wrapped overlap joint of metal tape carries out actual production according to special ratios, excellent shielding properties can be ensured, effectively can improve the linear transfer performance of cable, avoid the excessive distortion of signal, to ensure the accuracy of Signal transmissions, particularly effectively raise temperature and mechanical bent phase stability.。
Back-up coat 4 is tubular structure, is centered around the skin of lapping layer 3, plays the effect of protection reinforcement electric cable.Back-up coat 4 adopts thickness to be the transparent FEP thin layer of 0.05mm ~ 0.12mm, and lapping layer 3 is sticked together with insulating barrier 2 closely, and make a general survey of whole cable, its volume only increases a bit, so mate well with existing accessory.And, because continuous print extrudes the existence of back-up coat 4, make mechanical oscillation or bending time produce stress be released, ensure that the geometry of cable and the stability of internal structure, thus ensure that the steady phase behaviour of cable.The back-up coat extruded outside lapping layer 3, ensure that lapping layer 3 is vibrating in use procedure or when bending and relative displacement can not occurring, and makes to form Unified Global between belt, improves the mechanical bend performance of whole cable.Braid 5 is positioned at the outside of back-up coat, and the general silver-gilt copper wire material that adopts is as braid 5, and its count is at least more than 95%; Be aided with the restrictive coating 6 that FEP thin layer is extruded, form three complete coaxial phase-compensated cables.The triaxial cable that the utility model provides is on the basis of the stability of improve production efficiency and product quality, drastically increase drain performance and the steady phase performance of machinery of cable, especially bending characteristic and antivibration characteristic is improved, ensure that the linear propagation characteristics of signal, and can with at present conventional device and hardware compatibility.
Below with a concrete application examples for embodiment, be explained in detail for structure of the present utility model and effect, specific as follows:
As shown in Figure 2, for FLB150A specification high-temperature-resisting coaxial cable, comprise φ 0.93mm silver-plated copper inner wire, φ 2.90mm PTFE insulating barrier, after being accompanied by silver-plated copper strips lapping layer, use FEP thin layer to extrude formation back-up coat, form braid (density more than 95%) by silver-gilt copper wire braiding, finally use blue FEP as restrictive coating sheath stranding.
In the present embodiment, the insulating barrier of cable is made by pasty state PTFE pushing equipment, concrete as Fig. 3, propellant is injected by a certain percentage in PTFE material, then uniform stirring 30 minutes, put into curing chamber (30 DEG C ~ 50 DEG C) slaking after 24 hours, take out, under 0.8MPa, suppress 30min ~ 50min become prefabricated rods; Prefabricated rods is placed in cold pushing equipment, and under the pressure of 55 tons ~ 60 tons, carry out cold pushing, insulating barrier is coated on silver-coated copper wire inner wire, forms heart yearn.Special warm area design ensure that the crystallinity of insulation and the volatility of propellant, and through actual measurement, its relative transmission rate can reach 77%.Use self-adhering-type silver-plated copper strips lapping layer wrapped in heart yearn surface, unique overlapping rate design ensure that the stability of the steady phase behaviour of cable and structure, then use FEP carry out thin layer extrude formed back-up coat reinforce, insulating barrier and lapping layer outer conductor is made to form Unified Global, ensure that when using under the mal-condition such as vibration at high speed and bending, the stability of cable geometry and size, avoid producing relative displacement, thus ensureing the consistency of its cable performance and quality, excellence is steady phase behaviour and standing wave performance.
Comparative example 1: cable loss aspect, as shown in Figure 4, when vibration at high speed and bending, the cable loss curve of specification of the same race.The cable that the present embodiment provides is before and after vibration at high speed and bending, and its Dissipation change is lower than 2%.
Comparative example 2: the steady phase aspect of machinery, as shown in Figure 5.The phase angle variations of cable under bending machinery condition adopting increase to extrude back-up coat is within 2.5 °, is better than 5 ° of normal cable; Bending property is improved simultaneously.
Comparative example 3: the steady phase aspect of temperature, as shown in Figure 6.Adopt increase the phase of cable of extruding back-up coat with at temperature (-60 ~ 100 DEG C)≤600ppm, be better than normal cable≤1000ppm; Performance improves nearly one times.
Comparative example 4: standing wave performance and distorted signals aspect.The cable adopting increase to extrude back-up coat is≤1.15 in the standing wave value of below 40GHz frequency range.Even if its value does not also exceed 1.18 after vibration at high speed bending change, be far superior to normal cable≤1.30, effectively ensure that signal transmission characteristics.
More than describe only for illustration of and and unrestricted technical scope of the present invention.The utility model can the requirement of different condition; (minimum is 0.047 〞 specification cable to make different size; be 0.400 〞 specification cable to the maximum) RF/Microwave communication three coaxial phase-compensated cables, all should be encompassed within claims of the present utility model.
The above, above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. three coaxial phase-compensated cables, is characterized in that, comprise metallic inner conductor, insulating barrier, lapping layer, back-up coat, braid and restrictive coating successively from inside to outside.
2. according to claim 1 a kind of three coaxial phase-compensated cables, is characterized in that, described inner wire is synnema type inner wire.
3. according to claim 1 a kind of three coaxial phase-compensated cables, it is characterized in that, described lapping layer thickness is 0.01mm ~ 0.12mm.
4. according to claim 1 a kind of three coaxial phase-compensated cables, is characterized in that, described lapping layer is silver-plated copper strips lapping layer or copper strips lapping layer.
5. according to claim 1 a kind of three coaxial phase-compensated cables, is characterized in that, described lapping layer is self-adhering-type metal lapping layer.
6. according to claim 1 a kind of three coaxial phase-compensated cables, is characterized in that, described lapping layer is plain edition metal lapping layer.
7. according to claim 1 a kind of three coaxial phase-compensated cables, is characterized in that, described insulating barrier is low-density lightweight PTFE powder insulating barrier.
8. according to claim 1 a kind of three coaxial phase-compensated cables, it is characterized in that, described lapping layer Duplication is 40% ~ 80%.
9. according to claim 1 a kind of three coaxial phase-compensated cables, it is characterized in that, described back-up coat thickness is 0.05mm ~ 0.12mm.
10. according to claim 1 a kind of three coaxial phase-compensated cables, it is characterized in that, described braid is silver-gilt copper wire braid, and described braid count is more than 95%.
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| CN201520372692.2U CN204632442U (en) | 2015-06-02 | 2015-06-02 | A kind of three coaxial phase-compensated cables |
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| CN201520372692.2U CN204632442U (en) | 2015-06-02 | 2015-06-02 | A kind of three coaxial phase-compensated cables |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448846A (en) * | 2016-12-12 | 2017-02-22 | 广州凯恒特种电线电缆有限公司 | Fluoropolymer wire and cable and preparation thereof |
| CN106782801A (en) * | 2016-12-12 | 2017-05-31 | 广州凯恒特种电线电缆有限公司 | A kind of Aero-Space special wire cable and preparation method thereof |
| CN110349696A (en) * | 2019-06-11 | 2019-10-18 | 神宇通信科技股份公司 | A kind of insulated conductor and its production technology with multilayer dielectric layer |
| CN110349697A (en) * | 2019-06-11 | 2019-10-18 | 神宇通信科技股份公司 | A kind of insulated conductor and its production technology with double layer of insulation |
-
2015
- 2015-06-02 CN CN201520372692.2U patent/CN204632442U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448846A (en) * | 2016-12-12 | 2017-02-22 | 广州凯恒特种电线电缆有限公司 | Fluoropolymer wire and cable and preparation thereof |
| CN106782801A (en) * | 2016-12-12 | 2017-05-31 | 广州凯恒特种电线电缆有限公司 | A kind of Aero-Space special wire cable and preparation method thereof |
| CN110349696A (en) * | 2019-06-11 | 2019-10-18 | 神宇通信科技股份公司 | A kind of insulated conductor and its production technology with multilayer dielectric layer |
| CN110349697A (en) * | 2019-06-11 | 2019-10-18 | 神宇通信科技股份公司 | A kind of insulated conductor and its production technology with double layer of insulation |
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