CN105405521A - Cracking prevention semi-hard cable - Google Patents
Cracking prevention semi-hard cable Download PDFInfo
- Publication number
- CN105405521A CN105405521A CN201510981965.8A CN201510981965A CN105405521A CN 105405521 A CN105405521 A CN 105405521A CN 201510981965 A CN201510981965 A CN 201510981965A CN 105405521 A CN105405521 A CN 105405521A
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- Prior art keywords
- dielectric layer
- resilient coating
- outer conductor
- crack resistence
- cable according
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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Abstract
The invention belongs to the technical field of a coaxial cable and relates to a cracking prevention semi-hard cable. The cracking prevention semi-hard cable comprises an inner conductor, a dielectric layer and an outer conductor, wherein the dielectric layer wraps outside the inner conductor, the outer conductor wraps outside the dielectric layer, and a buffer layer is further arranged between the dielectric layer and the outer conductor and made of a continuous solid material with pores. The buffer layer of the cracking prevention semi-hard cable is provided with a buffer structure which can be used for preventing the outer conductor from bursting, and the service lifetime of the cable in an extreme working condition is guaranteed.
Description
Technical field
The present invention relates to coaxial cable technology field, particularly relate to a kind of semihard cable that can prevent dielectric layer expanded by heating spalling outer conductor.
Background technology
High-power signal transmission semihard (soft containing half) cable in the market, its dielectric material is mostly solid core PTFE material.In powerful radio signal transmission process, cable dielectric can produce heat.PTFE solid material is after being heated, and its volume can expand, and in any case, its outer conductor (seamless metal pipe or metal wire knitted wicking) meeting spalling by medium volumetric expansion, causes cable bad.
In order to avoid above problem in prior art, the usual elongation adopting the gap between control medium and outer conductor or change outer conductor material, cushions because heating causes medium volumetric expansion.But in order to ensure between medium and outer conductor not too cavity, the thickness in gap is only had an appointment 0.025mm, so also can only ensure to play seamless tubular shaped metal outer conductor and do not ftracture exceeding the very little scope of rated power.But in extreme circumstances, because the dielectric material volume that is heated sharply expands, and the elongation of seamless tubular shaped metal outer conductor is limited, still can cause that tubular outer conductor ftractures, damage parts, even cause whole system to paralyse.
Therefore, be necessary to provide the more reliable semihard cable of one to solve the problems referred to above.
Summary of the invention
Main purpose of the present invention is to provide a kind of semihard cable that can prevent dielectric layer expanded by heating spalling outer conductor.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of crack resistence semihard cable, the outer conductor comprising inner wire, be wrapped in the dielectric layer outside described inner wire and be wrapped in outside described dielectric layer, also be provided with resilient coating between described dielectric layer and outer conductor, described resilient coating by continuously and the solid material with hole form.
Concrete, described buffer layer thickness is 0.05-5mm.
Further, described resilient coating is the alveolate tubular structure of inner dispersion, and the thickness of described resilient coating is 0.1-5mm.
Further, described resilient coating forms by there being the film wrapped of micropore in single or multiple lift, and the thickness in monolayer of described film is 0.01-2mm.
Further, described film is stretched by PTFE material and varicosity microporous membrane that is that produce.
Further, the density of described film is 0.5-1.9g/cm
3.
Further, described resilient coating comprises the circle portion and some double wedges uniform on described circle portion inwall of being close to outer conductor, and described double wedge is held in the outer surface of described dielectric layer.
Further, the cross section of described double wedge rounded and in have perforation.
Adopt technique scheme, the beneficial effect of technical solution of the present invention is:
1, the buffer structure that resilient coating has can avoid spalling outer conductor, has ensured the useful life of cable under extreme operating state;
2, less buffer layer thickness can ensure the bent performance of cable under the prerequisite of crack resistence;
3, bubble can make resilient coating have compressibility, the concentricity of internal and external conductor after guarantee cable folding;
4, microporous membrane package structure also has compressibility, and material can not be tired because of cable folding;
5, the film that PTFE material stretches can adapt to multiple use occasion because of the difference of degree for the treatment of;
6, circle portion can comply with outer conductor interior wall construction, and the strain of double wedge can compensate for the expansion change of dielectric layer;
7, double wedge is rounded when having a perforation structure, and double wedge can squeeze flat by the expansion of dielectric layer, can guarantee the concentricity between internal and external conductor so better.
Accompanying drawing explanation
Fig. 1 is the profile of crack resistence semihard cable of the present invention;
Fig. 2 is the structure for amplifying schematic diagram of A position on Fig. 1 in embodiment 1;
Fig. 3 is the structure for amplifying schematic diagram of A position on Fig. 1 in embodiment 2;
Fig. 4 is the structure for amplifying schematic diagram of A position on Fig. 1 in embodiment 3;
Fig. 5 is the structure for amplifying schematic diagram of A position on Fig. 1 in embodiment 4.
Numeral in figure:
1-inner wire; 2-dielectric layer, 3-resilient coating, 31a-bubble, 32a-film, 32b-micropore, 33a-circle portion, 33b-double wedge, 33c-bores a hole; 4-outer conductor.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
As depicted in figs. 1 and 2, the outer conductor 4 comprising inner wire 1, be wrapped in the dielectric layer 2 outside inner wire 1 and be wrapped in outside dielectric layer 2, resilient coating 3 is also provided with between dielectric layer 2 and outer conductor 4, resilient coating 3 by continuously and the solid material with hole form, be specially: resilient coating 3 has the tubular structure of bubble 31a for inner dispersion, and the thickness of resilient coating 3 is 0.1-5mm.Dielectric layer 2 and resilient coating 3 play the effect of isolated inner wire 1 and outer conductor 2, and both can be made to keep certain concentricity, avoid the disturbance in transmission of electricity process.Dielectric layer 2 docile is on inner wire 1, and when inner wire 1 adstante febre, dielectric layer 2 can produce expansion; But owing to comprising bubble 31a in resilient coating 3, so have compressibility, when being subject to the expansion of dielectric layer 2 from-inner-to-outer, resilient coating 3 can produce distortion, under certain thickness buffering, displacement transfer will obviously slow down to the outside of resilient coating 3, and the expansionary force that such resilient coating 3 pairs of outer conductors 4 increase can be ignored, avoid outer conductor 4 by spalling, ensure the useful life of cable under extreme operating state.Resilient coating 3 thickness of 0.1-5mm can ensure the bent performance of cable under the prerequisite of crack resistence.
Embodiment 2
As shown in figures 1 and 3, be with the difference of embodiment 1: resilient coating 22 forms by there being the film 32a of micropore 32b to wrap up in single or multiple lift, the thickness in monolayer of film 32a is 0.01-2mm, and total Jacket thickness is 0.05-5mm.Parcel can adopt wrapped, vertical bag or the various ways such as extrude.Because the inside of film 32a itself has micropore 32b, therefore possess compressibility, the resilient coating 3 therefore by being wrapped to form also possesses compressibility.In addition, running into the situation of cable folding, can mutually slide between integument, material can not be tired, more not fragile because of cable folding.
This film 32a can be stretched by PTFE material and varicosity microporous membrane that is that produce, and the density of film 32a is 0.5-1.9g/cm
3.In certain range of stretch, film 32a can play outer conductor 4 crack resistence effect.But it is larger to stretch, and film 32a density is less, and porosity is larger, and cable elasticity is more weak; Otherwise cable elasticity is stronger.Such homogeneous raw material just can adapt to multiple use occasion through process in various degree.
Embodiment 3
As shown in Figure 1 and Figure 4, be with the difference of embodiment 1: resilient coating 3 comprises the circle portion 33a and some double wedge 33b uniform on circle portion 33a inwall that are close to outer conductor 4, and double wedge 33b is held in the outer surface of dielectric layer 2.Circle portion 33a can comply with outer conductor 4 interior wall construction, and after dielectric layer 2 swells, double wedge 33b still can be held in the outer surface of dielectric layer 2 but strain can occur, and this makes it possible to the expansion change of compensating for dielectric layer 2, avoids outer conductor 4 spalling.
Embodiment 4
As shown in Figure 1 and Figure 5, be with the difference of embodiment 3: the cross section of double wedge 33b rounded and in have perforation 33c.When dielectric layer 2 is expanded time, this structure of double wedge 33b can be crowded flat.Squeeze flat double wedge 33b and can possess certain elastic force, the concentricity between inner wire 1 and outer conductor 4 can be guaranteed so better.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. a crack resistence semihard cable, the outer conductor comprising inner wire, be wrapped in the dielectric layer outside described inner wire and be wrapped in outside described dielectric layer, it is characterized in that: between described dielectric layer and outer conductor, be also provided with resilient coating, described resilient coating by continuously and the solid material with hole form.
2. crack resistence semihard cable according to claim 1, is characterized in that: described buffer layer thickness is 0.05-5mm.
3. crack resistence semihard cable according to claim 2, is characterized in that: described resilient coating is the alveolate tubular structure of inner dispersion, and the thickness of described resilient coating is 0.1-5mm.
4. crack resistence semihard cable according to claim 2, is characterized in that: described resilient coating forms by there being the film wrapped of micropore in single or multiple lift, and the thickness in monolayer of described film is 0.01-2mm.
5. crack resistence semihard cable according to claim 4, is characterized in that: described film is stretched by PTFE material and varicosity microporous membrane that is that produce.
6. crack resistence semihard cable according to claim 5, is characterized in that: the density of described film is 0.5-1.9g/cm
3.
7. crack resistence semihard cable according to claim 2, is characterized in that: described resilient coating comprises the circle portion and some double wedges uniform on described circle portion inwall of being close to outer conductor, and described double wedge is held in the outer surface of described dielectric layer.
8. crack resistence semihard cable according to claim 6, is characterized in that: the cross section of described double wedge rounded and in have perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981965.8A CN105405521B (en) | 2015-12-24 | 2015-12-24 | Crack resistence semihard cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981965.8A CN105405521B (en) | 2015-12-24 | 2015-12-24 | Crack resistence semihard cable |
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| Publication Number | Publication Date |
|---|---|
| CN105405521A true CN105405521A (en) | 2016-03-16 |
| CN105405521B CN105405521B (en) | 2017-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510981965.8A Active CN105405521B (en) | 2015-12-24 | 2015-12-24 | Crack resistence semihard cable |
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| CN (1) | CN105405521B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382206A (en) * | 2020-11-13 | 2021-02-19 | Tcl华星光电技术有限公司 | Back plate and LED panel |
| CN114068077A (en) * | 2020-07-29 | 2022-02-18 | 矢崎总业株式会社 | Shielded electric wire and wire harness |
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| US4439255A (en) * | 1979-03-23 | 1984-03-27 | Nippondenso Co., Ltd. | Process for production of heat resistant insulated electric wire and cable |
| CN201430206Y (en) * | 2009-06-26 | 2010-03-24 | 淮南新光神光纤线缆有限公司 | Polytetrafluoroethylene medium semi-soft coaxial radio frequency cable |
| CN201853790U (en) * | 2010-10-15 | 2011-06-01 | 江苏帝一集团有限公司 | Flexible radio frequency cable with low loss and highly stable phase |
| CN202549463U (en) * | 2012-04-19 | 2012-11-21 | 远东电缆有限公司 | 27.5kV single-phase cable for intelligent electrified railway |
| CN104319008A (en) * | 2014-10-29 | 2015-01-28 | 江苏俊知技术有限公司 | High-temperature-resistant low-loss compound insulation coaxial cable |
| CN204178755U (en) * | 2014-09-25 | 2015-02-25 | 湖北源泰昌电线电缆有限公司 | A kind of Anti-vibration cable |
| CN205318906U (en) * | 2015-12-24 | 2016-06-15 | 昆山安胜达微波科技有限公司 | Semi hard cable of preventing ftractureing |
-
2015
- 2015-12-24 CN CN201510981965.8A patent/CN105405521B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4439255A (en) * | 1979-03-23 | 1984-03-27 | Nippondenso Co., Ltd. | Process for production of heat resistant insulated electric wire and cable |
| CN201430206Y (en) * | 2009-06-26 | 2010-03-24 | 淮南新光神光纤线缆有限公司 | Polytetrafluoroethylene medium semi-soft coaxial radio frequency cable |
| CN201853790U (en) * | 2010-10-15 | 2011-06-01 | 江苏帝一集团有限公司 | Flexible radio frequency cable with low loss and highly stable phase |
| CN202549463U (en) * | 2012-04-19 | 2012-11-21 | 远东电缆有限公司 | 27.5kV single-phase cable for intelligent electrified railway |
| CN204178755U (en) * | 2014-09-25 | 2015-02-25 | 湖北源泰昌电线电缆有限公司 | A kind of Anti-vibration cable |
| CN104319008A (en) * | 2014-10-29 | 2015-01-28 | 江苏俊知技术有限公司 | High-temperature-resistant low-loss compound insulation coaxial cable |
| CN205318906U (en) * | 2015-12-24 | 2016-06-15 | 昆山安胜达微波科技有限公司 | Semi hard cable of preventing ftractureing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068077A (en) * | 2020-07-29 | 2022-02-18 | 矢崎总业株式会社 | Shielded electric wire and wire harness |
| CN112382206A (en) * | 2020-11-13 | 2021-02-19 | Tcl华星光电技术有限公司 | Back plate and LED panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105405521B (en) | 2017-10-10 |
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Address after: No. 177, Xinle Road, Dianshanhu Town, Kunshan City, Suzhou City, Jiangsu Province, 215000 Patentee after: Jiangsu Anshengda Aerospace Technology Co.,Ltd. Address before: No. 28, Xinxing Road, Dianshanhu Town, Kunshan City, Suzhou City, Jiangsu Province 215300 Patentee before: KUNSHAN ADVANCED MICROWAVE TECHNOLOGIES CO.,LTD. |
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