阅读说明：本技术 低损稳相电缆 (Low-loss phase-stabilizing cable ) 是由 徐文峰 王迟龙 蒋华平 赵莉 邹良龙 徐文利 朱小红 叶桦 辛吻吻 王士功 杨涛 于 2021-07-30 设计创作，主要内容包括：本发明涉及电缆技术领域,且公开了低损稳相电缆,包括缆芯、加固套、外导体和电缆外护套,缆芯位于加固套内设置,外导体固定套接在加固套上,电缆外护套固定套接在外导体上,缆芯由第一导体和多根第二导体组成,且第一导体和第二导体结构相同,第一导体与加固套同轴设置,多根第二导体沿着加固套内壁呈环形均匀分布,第一导体的外侧壁上固定连接有多个呈环形均匀分布的第一保持架,且多个第一保持架的另一端分别与多个第二导体的外侧壁固定连接,相邻两个第二导体之间固定连接有第二保持架。该低损稳相电缆不仅具备良好的机械相位和温度相位稳定性,而且使得电缆具备良好的抗干扰能力,有效降低电缆损耗,提高电缆的使用寿命。(The invention relates to the technical field of cables and discloses a low-loss phase-stable cable which comprises a cable core, a reinforcing sleeve, an outer conductor and a cable outer sheath, wherein the cable core is arranged in the reinforcing sleeve, the outer conductor is fixedly sleeved on the reinforcing sleeve, the cable outer sheath is fixedly sleeved on the outer conductor, the cable core is composed of a first conductor and a plurality of second conductors, the first conductor and the second conductors are identical in structure, the first conductor and the reinforcing sleeve are coaxially arranged, the plurality of second conductors are uniformly distributed in an annular shape along the inner wall of the reinforcing sleeve, a plurality of first retaining frames uniformly distributed in an annular shape are fixedly connected to the outer side wall of the first conductor, the other ends of the plurality of first retaining frames are respectively and fixedly connected with the outer side walls of the plurality of second conductors, and a second retaining frame is fixedly connected between every two adjacent second conductors. This low steady phase cable that decreases not only possesses good mechanical phase place and temperature phase stability, makes the cable possess good interference killing feature moreover, effectively reduces the cable loss, improves the life of cable.)

1. Low steady phase cable that decreases, including cable core, reinforcement cover (1), outer conductor (2) and cable oversheath (3), the cable core is located and sets up in reinforcement cover (1), outer conductor (2) fixed cup joints on reinforcement cover (1), cable oversheath (3) are fixed cup joints on outer conductor (2), its characterized in that: the cable core is composed of a first conductor (4) and a plurality of second conductors (5), the first conductor (4) and the second conductors (5) are identical in structure, the first conductor (4) and the reinforcing sleeve (1) are coaxially arranged, the plurality of second conductors (5) are uniformly distributed in an annular shape along the inner wall of the reinforcing sleeve (1), a plurality of first holders (6) uniformly distributed in an annular shape are fixedly connected to the outer side wall of the first conductor (4), the other ends of the plurality of first holders (6) are respectively fixedly connected to the outer side walls of the plurality of second conductors (5), a second holder (7) is fixedly connected between every two adjacent second conductors (5), and buffer layers (8) are filled between the reinforcing sleeve (1) and the first conductor (4) and between the reinforcing sleeve and the plurality of second conductors (5);

first conductor (4) and second conductor (5) include from inside to outside coaxial setting inner conductor (9), insulating protective layer (10), around package insulating layer (11), internal shield layer (12) and armor (13), insulating protective layer (10) fixed cup joints and sets up on inner conductor (9), evenly wrap in the insulating protective layer (10) outside around package insulating layer (11), internal shield layer (12) are fixed cup joints on package insulating layer (11), armor (13) are fixed cup joints and set up on internal shield layer (12).

2. The low loss phase stable cable of claim 1, wherein: the outer conductor (2) comprises an outer shielding layer (14), an aluminum-plastic film layer (15) and a metal woven belt layer (16), wherein the outer shielding layer (14), the aluminum-plastic film layer (15) and the metal woven belt layer (16) are sequentially arranged from inside to outside, the outer shielding layer (14) is fixedly sleeved on the reinforcing sleeve (1), the aluminum-plastic film layer (15) is fixedly sleeved on the outer shielding layer (14), and the metal woven belt layer (16) is uniformly wrapped on the aluminum-plastic film layer (15).

3. The low loss phase stable cable of claim 1, wherein: the outer side of the cable outer sheath (3) is fixedly sleeved with a matched flame-retardant layer (17), and the outer side of the flame-retardant layer (17) is fixedly sleeved with an anticorrosive layer (18).

4. The low loss phase stable cable of claim 1, wherein: a plurality of arc grooves which are uniformly distributed are formed in the side wall of the inner ring of the reinforcing sleeve (1), and the second conductor (5) is attached to the arc grooves.

5. The low loss phase stable cable of claim 1, wherein: the insulation protection layer (10) is formed by foaming an FEP fluorine material.

6. The low loss phase stable cable of claim 1, wherein: the lapping insulating layer (11) is made of microporous PTFE film materials.

7. The low loss phase stable cable of claim 1, wherein: a plurality of vent holes (19) are formed in the buffer layer (8) in a penetrating mode.

Technical Field

The invention relates to the technical field of cables, in particular to a low-loss phase-stable cable.

Background

The cable is widely applied in various industries, particularly in high-end fields in some fields, the requirements on the cable not only have low attenuation and low standing-wave ratio, but also require that the change of a cable phase shift constant caused by temperature change and mechanical stress action change is small, according to the requirements and the characteristics of functions and structures, an independent cable, namely a coaxial phase-stabilizing cable, is separated from a radio-frequency cable, the low-loss, low-standing-wave and high-phase stability is the development direction of the current millimeter-wave and microwave coaxial cables, and the coaxial phase-stabilizing cable is mainly applied to the following aspects; (1) phased radar arrays, radio telescopes, satellite tracking stations and other environments requiring high phase stability; (2) as transmission lines of various radio devices in communication devices such as communication, warning, guidance, navigation, electronic countermeasure, and the like, particularly transmission lines of portions requiring movement; (3) a radio frequency connecting feeder line of electronic equipment such as a vector network analyzer, and the like, and (4) the fields of microwave, energy, medical treatment, computers and the like.

Current cable is in the in-process of using, receives the bending for a long time to lead to the inside cable inner core of cable to take place deformation, increased the damage of cable main part, do not have isolation mechanism between the cable inner core simultaneously, the cable inner core is at signal transmission's in-process, causes mutual interference between the signal easily, influences the transmission of signal.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a low-loss phase-stable cable, which has the advantages of stable phase and low loss, and solves the problems that in the prior art, when the cable is bent, the cable core is easy to deform, and the cable is easy to interfere in the signal transmission process.

(II) technical scheme

In order to achieve the purposes of phase stability and low loss, the invention provides the following technical scheme: the low-loss phase-stable cable comprises a cable core, a reinforcing sleeve, an outer conductor and a cable outer sheath, wherein the cable core is arranged in the reinforcing sleeve, the outer conductor is fixedly sleeved on the reinforcing sleeve, the cable outer sheath is fixedly sleeved on the outer conductor, the cable core consists of a first conductor and a plurality of second conductors, the first conductor and the second conductors are identical in structure, the first conductor and the reinforcing sleeve are coaxially arranged, the plurality of second conductors are uniformly distributed in an annular shape along the inner wall of the reinforcing sleeve, a plurality of first retaining frames uniformly distributed in an annular shape are fixedly connected to the outer side wall of the first conductor, the other ends of the plurality of first retaining frames are respectively and fixedly connected with the outer side walls of the plurality of second conductors, second retaining frames are fixedly connected between every two adjacent second conductors, and buffer layers are filled between the reinforcing sleeve and the first conductor and the plurality of second conductors;

first conductor and second conductor include from inside to outside coaxial arrangement's inner conductor, insulating protective layer, around package insulating layer, internal shield layer and armor, insulating protective layer fixes and cup joints and sets up on the inner conductor, evenly wind the package insulating layer around the package outside in the insulating protective layer, the fixed cup joint of internal shield layer is on wrapping the insulating layer, the fixed cup joint of armor sets up on the internal shield layer.

Preferably, the outer conductor comprises an outer shielding layer, an aluminum-plastic film layer and a metal woven belt layer which are sequentially arranged from inside to outside, the outer shielding layer is fixedly sleeved on the reinforcing sleeve, the aluminum-plastic film layer is fixedly sleeved on the outer shielding layer, and the metal woven belt layer is uniformly wrapped on the aluminum-plastic film layer.

Preferably, the outer side of the cable outer sheath is fixedly sleeved with a matched flame-retardant layer, and the outer side of the flame-retardant layer is fixedly sleeved with an anticorrosive layer.

Preferably, a plurality of arc grooves which are uniformly distributed are formed in the side wall of the inner ring of the reinforcing sleeve, and the second conductor is attached to the arc grooves.

Preferably, the insulating protective layer is formed by foaming an FEP fluorine material.

Preferably, the lapping insulating layer is made of microporous PTFE film material.

Preferably, a plurality of vent holes are formed in the buffer layer in a penetrating manner.

(III) advantageous effects

Compared with the prior art, the invention provides a low-loss phase-stable cable, which has the following beneficial effects:

1. the low-loss phase-stable cable is characterized in that the cable core, the reinforcing sleeve, the outer conductor, the first conductor, the second conductor, the first retainer, the second retainer, the buffer layer, the inner conductor, the insulating protective layer, the wrapping insulating layer, the inner shielding layer and the armor layer are arranged, the plurality of first retainers are matched with the second retainer, so that a plurality of triangular reinforcing structures are formed between the first conductor and the plurality of second conductors, the cable core has good pressure resistance, the buffer layer is convenient for buffering the pressure applied to the cable core, the reinforcing sleeve is convenient for further reinforcing the cable core and the outer conductor, the relative structures of the cable core, the buffer layer and the outer conductor are kept stable under the long-term mechanical action of bending, torsion, impact and vibration, the tight combination is not shaken, the cable has good mechanical phase stability, the insulating protective layer and the wrapping insulating layer supplement each other, make the inner conductor possess good temperature phase stability, the internal shield layer can carry out signal shielding, avoids first conductor and a plurality of second conductor mutual interference in signal transmission process, and the armor is convenient protects first conductor and second conductor, further improves the compressive capacity of cable core.

2. This low steady phase cable that decreases, through setting up the outer conductor, outer shielding layer, the plastic-aluminum rete, the metal braid strip layer, the cable oversheath, fire-retardant layer and anticorrosive coating, outer shielding layer conveniently shields cable external signal, avoid external signal to cause the influence to the signal transmission of cable core, the plastic-aluminum rete is joined in marriage to the metal braid strip layer and is conveniently protected comprehensively to outer shielding layer, fire-retardant layer cooperation anticorrosive coating makes the cable oversheath possess good fire-retardant anticorrosive effect, thereby effectively reduce the cable loss, the life of improvement cable.

Drawings

Fig. 1 is a schematic structural diagram of a low-loss phase-stable cable according to the present invention;

fig. 2 is a schematic structural diagram of a first conductor of a low-loss phase-stable cable according to the present invention;

fig. 3 is a schematic structural diagram of the low-loss phase-stable cable outer conductor according to the present invention.

In the figure: 1 reinforcing cover, 2 outer conductors, 3 cable oversheath, 4 first conductors, 5 second conductors, 6 first holders, 7 second holders, 8 buffer layers, 9 inner conductors, 10 insulating protective layers, 11 are around package insulating layer, 12 internal shield layers, 13 armor, 14 outer shielding layers, 15 plastic-aluminum rete, 16 metal woven tape layer, 17 flame retardant coating, 18 anticorrosive coating, 19 ventilation holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the low-loss phase-stable cable includes a cable core, a reinforcing sleeve 1, an outer conductor 2 and an outer cable sheath 3, wherein the cable core is disposed in the reinforcing sleeve 1, the outer conductor 2 is fixedly sleeved on the reinforcing sleeve 1, the outer cable sheath 3 is fixedly sleeved on the outer conductor 2, the cable core is composed of a first conductor 4 and a plurality of second conductors 5, the first conductor 4 and the second conductor 5 have the same structure, the first conductor 4 and the reinforcing sleeve 1 are coaxially arranged, the plurality of second conductors 5 are uniformly distributed along the inner wall of the reinforcing sleeve 1 in an annular shape, the outer side wall of the first conductor 4 is fixedly connected with a plurality of first retaining frames 6 uniformly distributed in an annular shape, the other ends of the first retainers 6 are respectively fixedly connected with the outer side walls of the second conductors 5, a second retainer 7 is fixedly connected between every two adjacent second conductors 5, and buffer layers 8 are filled between the reinforcing sleeve 1 and the first conductors 4 as well as between the reinforcing sleeve and the second conductors 5;

the first conductor 4 and the second conductor 5 comprise an inner conductor 9, an insulating protective layer 10, a wrapping insulating layer 11, an inner shielding layer 12 and an armor layer 13 which are coaxially arranged from inside to outside, the insulating protective layer 10 is fixedly sleeved on the inner conductor 9, the insulating protective layer 10 is formed by foaming an FEP fluorine material, the wrapping insulating layer 11 is uniformly wrapped outside the insulating protective layer 10, the wrapping insulating layer 11 is made of a microporous PTFE film material, the inner shielding layer 12 is fixedly sleeved on the wrapping insulating layer 11, the armor layer 13 is fixedly sleeved on the inner shielding layer 12, the plurality of first holders 6 are matched with the second holders 7, so that a plurality of triangular stable structures are formed between the first conductor 4 and the plurality of second conductors 5, the cable core has good pressure resistance, the buffer layer 8 is convenient for buffering the pressure of the cable core, the reinforcing sleeve 1 is convenient for further reinforcing the cable core and the outer conductor 2, make the cable core, buffer layer 8, the relative structure of these three of outer conductor 2 is crooked, twist reverse, strike, the long-term mechanical action of vibrations keeps stable down, it does not rock to combine closely, thereby make the cable possess good mechanical phase stability, insulating protective layer 10 with around package insulating layer 11 complement each other, make inner conductor 9 possess good temperature phase stability, inner shield layer 12 can carry out signal shielding, avoid first conductor 4 and a plurality of second conductor 5 mutual interference in signal transmission process, armor 13 conveniently protects first conductor 4 and second conductor 5, further improve the compressive capacity of cable core.

Outer conductor 2 includes the outer shielding layer 14 that sets gradually from inside to outside, plastic-aluminum membrane layer 15 and metal braid strip layer 16, the fixed cup joint of outer shielding layer 14 is on reinforcing cover 1, plastic-aluminum membrane layer 15 is fixed cup joints on outer shielding layer 14, metal braid strip layer 16 evenly winds the package on plastic-aluminum membrane layer 15, shielding layer 14 conveniently shields cable external signal, avoid external signal to cause the influence to the signal transmission of cable core, plastic-aluminum membrane layer 15 cooperates metal braid strip layer 16 to conveniently protect comprehensively external shielding layer 14.

The outer side of the cable outer sheath 3 is fixedly sleeved with the matched flame-retardant layer 17, the outer side of the flame-retardant layer 17 is fixedly sleeved with the anticorrosive layer 18, and the flame-retardant layer 17 is matched with the anticorrosive layer 18 to enable the cable outer sheath 3 to have a good flame-retardant and anticorrosive effect, so that the cable loss is effectively reduced, and the service life of the cable is prolonged.

Set up a plurality of evenly distributed's arc recess on the inner circle lateral wall of reinforcing cover 1, second conductor 5 sets up with the laminating of arc recess, and the second conductor 5 of being convenient for and the mounting of 1 laminating of reinforcing cover guarantee the stability of installation.

A plurality of ventilation holes 19 are formed in the buffer layer 8 in a penetrating mode, and therefore the cable core can conveniently dissipate heat.

In summary, in the low-loss phase-stable cable, the plurality of first holders 6 are matched with the second holders 7, so that a plurality of triangular stable structures are formed between the first conductor 4 and the plurality of second conductors 5, the cable core has good pressure resistance, the buffer layer 8 is convenient for buffering the pressure applied to the cable core, the reinforcing sleeve 1 is convenient for further reinforcing the cable core and the outer conductor 2, the relative structures of the cable core, the buffer layer 8 and the outer conductor 2 are kept stable under the long-term mechanical action of bending, torsion, impact and vibration, and are tightly combined without shaking, so that the cable has good mechanical phase stability, the insulating protective layer 10 and the wrapping insulating layer 11 are complementary, so that the inner conductor 9 has good temperature phase stability, the inner shielding layer 12 can perform signal shielding, and the first conductor 4 and the plurality of second conductors 5 are prevented from mutual interference in the signal transmission process, the armor layer 13 is convenient for protecting the first conductor 4 and the second conductor 5, and the pressure resistance of the cable core is further improved; outer shielding layer 14 conveniently shields cable external signal, avoids external signal to cause the influence to the signal transmission of cable core, and the cooperation metal woven tape layer 16 of aluminium-plastic film layer 15 conveniently protects outer shielding layer 14 comprehensively, and fire-retardant layer 17 cooperation anticorrosive coating 18 makes cable oversheath 3 possess good fire-retardant anticorrosive effect to effectively reduce the cable loss, improve the life of cable.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 invention, the scope of which is defined in the appended claims and their equivalents.