CN201514809U - Double-shielding mineral insulated cable - Google Patents
Double-shielding mineral insulated cable Download PDFInfo
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- CN201514809U CN201514809U CN2009201985363U CN200920198536U CN201514809U CN 201514809 U CN201514809 U CN 201514809U CN 2009201985363 U CN2009201985363 U CN 2009201985363U CN 200920198536 U CN200920198536 U CN 200920198536U CN 201514809 U CN201514809 U CN 201514809U
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- insulated cable
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Abstract
The utility model relates to a double-shielding mineral insulated cable, which is mainly applied in the field of high-frequency transmission under high environment temperature and high radiation, such as the communication fields of metallurgy, medical treatment, aerospace and military. The double-shielding cable comprises an inner conductor, insulated medium, an outer conductor, insulating medium and a sheath from inside to outside, and is characterized in that the insulating medium is magnesia oxide, aluminum oxide or silicon oxide. Compared with an existing double-shielding cable, the double-shielding mineral insulated cable has the advantages of longer service life and wider use range, superior performances and small interference to transmitted signals, and can be used in the communication fields of metallurgy, medical treatment, aerospace and military.
Description
Technical field
The utility model relates to a kind of double-shielded mineral-insulated cable, is mainly used in the high-frequency signal transmission field that high ambient temperature, high-radiation field close, as the communications field of metallurgy, medical treatment, Aero-Space, military affairs etc.
Background technology
Existing screened cable is made up of inner wire, dielectric, outer conductor and sheath 4 parts.Inner wire is made of a solid conductor usually; Dielectric adopts polyethylene, polypropylene, polyvinyl chloride and fluoroplastics etc. usually, and the most frequently used dielectric is the polyethylene that loss is little, processing performance is good; Outer conductor has double action, and it both for a lead in the transmission loop, had shielding action again; Oversheath adopts polyethylene usually.Because structure and material makes the environment for use of this cable be restricted, and is below 70 ℃ such as service condition, and after using a period of time, can be owing to material aging, it is big that conductor resistance becomes, and the leakage current of dielectric increases; Oversheath is a polythene material, and mechanical strength is low, can destroy its symmetry and characteristic impedance behind the distortion of the cable, and signal is affected in transmission, and the useful life of this cable is not long.
The utility model content
The purpose of this utility model provides a kind of a kind of double-shielded mineral-insulated cable of alternative existing screened cable, it is made up of inner wire, interior dielectric, outer conductor, external insulation medium and sheath 5 parts equally, because all replacing with inorganic material with organic material, it has greatly improved the ability of damaging the factor around the opposing, not only be greatly improved useful life, and use occasion, use field also obtain expanding.
Above-mentioned technical purpose of the present utility model is achieved by the following technical programs:
A kind of double-shielded mineral-insulated cable comprises inner wire, dielectric, outer conductor, dielectric and sheath from inside to outside successively, it is characterized in that: described dielectric is magnesium oxide, aluminium oxide or silicon dioxide.
In the utility model technique scheme, dielectric is magnesium oxide, aluminium oxide or silicon dioxide.This class inorganic material has superior functions such as high temperature resistant, resistance to oxidation, ageing-resistant, intensity height compared with the organic material of prior art.The enforcement of technique scheme makes the utility model product compare existing product to have qualitative leap that not only the longer service life but also the scope of application are wide, have related to the communications fields such as metallurgy, medical treatment, Aero-Space, military affairs.
As preferably, described inner wire is a copper core; Described dielectric is a magnesium oxide; Described outer conductor is a copper pipe; Described sheath is copper pipe, stainless steel tube, corronil pipe or high temperature alloy steel pipe.
Metallic copper is that metallic copper also is the most general as conductor because the cost performance of its electric conductivity and price is the highest in all metals as conductor; Magnesium oxide is better as dielectric ratio aluminum oxide or silicon dioxide performance; Outer conductor is the part of transmitting loop, again inner wire is played shielding action simultaneously; In order to satisfy the needs that use at special occasions such as HTHP etc., sheath adopts copper pipe, stainless steel tube, corronil pipe or high temperature alloy steel pipe.
As preferably, described copper core only has one.
In sum, the utlity model has following beneficial effect:
1, the utility model double-shielded mineral-insulated cable is compared existing screened cable and is had the advantage that the life-span is longer and the scope of application is wider;
2, the utility model double-shielded mineral-insulated cable superior performance, the signal of transmission is disturbed little, can be used for the communications fields such as metallurgy, medical treatment, Aero-Space, military affairs.
Description of drawings
Fig. 1 is the structural representation of the embodiment one of the utility model double-shielded mineral-insulated cable.
Among the figure, the 1st, copper core inner wire, the 2nd, interior magnesium oxide dielectric, the 3rd, copper pipe outer conductor, the 4th, external oxidation magnesium dielectric, the 5th, copper pipe sheath.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification, but as long as all are subjected to the protection of Patent Law in claim scope of the present utility model.
Embodiment one
A kind of double-shielded mineral-insulated cable comprises copper core inner wire 1, interior magnesium oxide dielectric 2, copper pipe outer conductor 3, external oxidation magnesium dielectric 4 and corronil sheath 5 from inside to outside successively.Conductor diameter is 0.3mm, and interior magnesium oxide dielectric 2 thickness are 0.45mm, and copper pipe outer conductor 3 thickness are 0.15mm, and the thickness of external oxidation magnesium dielectric 4 is 1.5mm, and copper pipe sheath 5 external diameters are 5mm.The characteristic impedance of this kind cable is 50 Ω.
The described product of present embodiment is made by following method, and this method in turn includes the following steps:
1. the compacting of interior external insulation layer and sintering: the magnesia powder that granulation is good send into the dry powder press cartridge be pressed in insulating oxide magnesium porcelain knob and external insulation magnesium oxide porcelain knob, will the qualified interior insulating oxide magnesium porcelain knob of compacting and external insulation magnesium oxide porcelain knob at 1080 ℃ sintering temperature, sintering come out of the stove after 2 hours be cooled to 120 ℃ stand-by;
2. the assembling of inner shield insulated electric conductor, drawing and annealing: the interior insulating oxide magnesium porcelain knob behind the sintering is inserted in the cleaning copper pipe that external diameter is 30mm, be to be assembled into inner shield insulated electric conductor blank in the interior insulating oxide magnesium porcelain knob pre-manufactured hole after the cleaning copper rod of 5.2mm penetrates sintering then with external diameter, subsequently described inner shield insulated electric conductor blank is carried out drawing, being drawn to external diameter is that 5.7mm makes semi-finished product, needs in the drawing process described inner shield insulated electric conductor blank is carried out annealing in process;
3. the inner shield insulated electric conductor detects: the semi-finished product that obtain through above-mentioned steps are carried out electric property detect, enter next procedure after qualified;
4. sheath assembling, drawing and annealing: the external insulation magnesium oxide porcelain knob behind the 1. described sintering of step is inserted in the cleaning copper pipe that external diameter is 22mm, to 3. detect qualified semi-finished product through step then inserts in the pre-manufactured hole of the described external insulation magnesium oxide of this step porcelain knob, be assembled into the screened cable blank, then described double shield insulation blank being drawn to external diameter is that 5.0mm obtains finished product, needs in the drawing process described screened cable blank is annealed;
5. finished product detection: cable appearance, external diameter, core line diameter and electric property to finished product detect.
Embodiment two
Only be that with embodiment one difference described insulating material is an aluminium oxide, described sheath is the corronil sheath.
The manufacture method of the described product of present embodiment is consistent with embodiment one.
Embodiment three
Only be that with embodiment one difference described insulating material is a silicon dioxide, described sheath is the high temperature alloy steel pipe.
The manufacture method of the described product of present embodiment is also identical with embodiment one.
Claims (3)
1. a double-shielded mineral-insulated cable comprises inner wire, dielectric, outer conductor, dielectric and sheath from inside to outside successively, it is characterized in that: described dielectric is magnesium oxide, aluminium oxide or silicon dioxide.
2. double-shielded mineral-insulated cable according to claim 1 is characterized in that: described inner wire is a copper core; Described dielectric is a magnesium oxide; Described outer conductor is a copper pipe; Described sheath is copper pipe, stainless steel tube, corronil pipe or high temperature alloy steel pipe.
3. double-shielded mineral-insulated cable according to claim 1 is characterized in that: described copper core only has one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201985363U CN201514809U (en) | 2009-10-02 | 2009-10-02 | Double-shielding mineral insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201985363U CN201514809U (en) | 2009-10-02 | 2009-10-02 | Double-shielding mineral insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514809U true CN201514809U (en) | 2010-06-23 |
Family
ID=42486221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201985363U Expired - Fee Related CN201514809U (en) | 2009-10-02 | 2009-10-02 | Double-shielding mineral insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514809U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035328A (en) * | 2012-11-26 | 2013-04-10 | 晶锋集团股份有限公司 | Long-life double-shielded wire and manufacturing method of the same |
| CN107646085A (en) * | 2015-05-25 | 2018-01-30 | 诺沃皮尼奥内技术股份有限公司 | There are the turbofuel nozzle and gas-turbine unit of integrated form flame ion sensor |
| CN108877985A (en) * | 2018-06-28 | 2018-11-23 | 江苏通光电子线缆股份有限公司 | A kind of preparation method of inorganic insulation phase-compensated cable |
| WO2020150757A1 (en) | 2019-01-24 | 2020-07-30 | Piezocryst Advanced Sensorics Gmbh | Cable assembly and method for inspecting a cable assembly |
-
2009
- 2009-10-02 CN CN2009201985363U patent/CN201514809U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035328A (en) * | 2012-11-26 | 2013-04-10 | 晶锋集团股份有限公司 | Long-life double-shielded wire and manufacturing method of the same |
| CN107646085A (en) * | 2015-05-25 | 2018-01-30 | 诺沃皮尼奥内技术股份有限公司 | There are the turbofuel nozzle and gas-turbine unit of integrated form flame ion sensor |
| CN108877985A (en) * | 2018-06-28 | 2018-11-23 | 江苏通光电子线缆股份有限公司 | A kind of preparation method of inorganic insulation phase-compensated cable |
| WO2020150757A1 (en) | 2019-01-24 | 2020-07-30 | Piezocryst Advanced Sensorics Gmbh | Cable assembly and method for inspecting a cable assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20171002 |