CN201594417U - Triaxial mineral-insulated cable - Google Patents
Triaxial mineral-insulated cable Download PDFInfo
- Publication number
- CN201594417U CN201594417U CN2009202006492U CN200920200649U CN201594417U CN 201594417 U CN201594417 U CN 201594417U CN 2009202006492 U CN2009202006492 U CN 2009202006492U CN 200920200649 U CN200920200649 U CN 200920200649U CN 201594417 U CN201594417 U CN 201594417U
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- Prior art keywords
- layer
- insulated cable
- mineral
- triaxial
- insulating medium
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Abstract
The utility model relates to a triaxial mineral-insulated cable, which is mainly applied in the high frequency signal transmission field under high ambient temperature and high radiation, such as the communication fields of metallurgy, medical treatment, aviation and aerospace, military, etc. The triaxial mineral-insulated cable comprises an internal conductor layer, an internal insulating medium layer, an internal shielding layer, an external insulating medium layer, an external shielding layer and a sheath layer sequentially from inside to outside; and the triaxial mineral-insulated cable is characterized in that the internal insulating medium layer and/or the external shielding layer adopt magnesium oxide, aluminum oxide or silicon dioxide. The triaxial mineral-insulated cable provided by the utility model has the advantages of longer service life and more extensive applicable range as compared with the current coaxial cable.
Description
Technical field
The utility model relates to a kind of three-coaxial 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 coaxial cable is made up of inner wire, dielectric, outer conductor (internal shield) and oversheath (outer shielding layer) 4 parts.Inner wire is made of a solid conductor usually; Dielectric can adopt polyethylene, polypropylene, polyvinyl chloride (PVC) and fluoroplastics etc., and dielectric commonly used is the polyethylene that loss is little, processing performance is good.The outer conductor of coaxial cable has double action, and it both for a lead in the transmission loop, had shielding action again.Oversheath is generally polyethylene.Because the defective of structure, existing coaxial cable are in use for some time, material aging, insulation resistance diminishes, 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, signal is affected in transmission, and the useful life of this cable is not long, can not use for a long time in the high temperature occasion again.
The utility model content
The purpose of this utility model is to provide a kind of three-coaxial mineral insulated cable for solving the problems of the technologies described above.Greatly improved the ability of damaging the factor around the opposing because it all replaces with inorganic material with organic material, 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:
Three-coaxial mineral insulated cable, comprise inner conductor layer, interior insulating medium layer, internal shield, external insulation dielectric layer, outer shielding layer and restrictive coating from inside to outside successively, it is characterized in that: insulating medium layer and/or external insulation dielectric layer are magnesium oxide, aluminium oxide or silicon dioxide in described.
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 conductor layer is a copper core; Insulating medium layer and external insulation dielectric layer are magnesium oxide in described; Described internal shield and outer shielding layer are seamless copper pipe; Described sheath is gapless stainless steel tube 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.Seamless copper pipe has good shielding properties, and outer jacket is a seamless stainless steel, the mechanical strength height, and the long-term ambient temperature of using can reach 600 ℃.
As preferably, described copper core only has one.
In sum, the utlity model has following beneficial effect:
1, the utility model three-coaxial mineral insulated cable is compared existing coaxial cable and is had the advantage that the life-span is longer and the scope of application is wider;
2, the utility model three-coaxial 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 utility model three-coaxial mineral insulated cable;
Among the figure, the 1st, inner conductor layer, the 2nd, interior insulating medium layer, the 3rd, internal shield, the 4th, external insulation dielectric layer, the 5th, outer shielding layer, the 6th, restrictive coating.
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.
As shown in Figure 1, three-coaxial mineral insulated cable comprises inner conductor layer 1, interior insulating medium layer 2, internal shield 3, external insulation dielectric layer 4, outer shielding layer 5 and restrictive coating 6 from inside to outside successively, and interior insulating medium layer 2 and external insulation dielectric layer 4 are magnesium oxide.This cable conductor diameter is 0.6mm, interior insulating medium layer 2 thickness are 0.35mm, the thickness of internal shield 3 is 0.25mm, the thickness of external insulation dielectric layer 4 is 1.0mm, the thickness of outer shielding layer 5 is 0.35mm, the external diameter of cable cover(ing) layer 6 is 5.3mm, and the anti-resistance of the characteristic of this kind cable is characteristic impedance 50 Ω.
The utility model can pass through following steps manufacturing successively:
1. the compacting of inside and outside insulating barrier and sintering: the magnesia powder that granulation is good is sent into the dry powder press cartridge, insulating oxide magnesium porcelain knob and external insulation magnesium oxide porcelain knob in being pressed into, interior insulating oxide magnesium porcelain knob that compacting is qualified and external insulation magnesium oxide porcelain knob are cooled to 120 ℃ of taking-ups at 1080 ℃ sintering temperature after 2 hours standby;
2. assembling, drawing and the annealing of inner conductor layer, interior insulating medium layer and internal shield: the interior insulating oxide magnesium porcelain knob behind the sintering is inserted in the cleaning copper pipe that external diameter is 30mm, be that the cleaning copper rod of 8.6mm penetrates in the pre-manufactured hole of the interior insulating oxide magnesium porcelain knob behind the sintering and is assembled into blank A then with diameter, subsequently described blank A being pulled to external diameter is to make first-stage semi-finished product behind the 8.6mm; Need in the drawing process described blank A is carried out annealing in process;
3. the detection of first-stage semi-finished product: the first-stage semi-finished product that obtains through above-mentioned steps is carried out electric property detect, enter next procedure after qualified;
4. assembling, drawing and the annealing of first-stage semi-finished product, external insulation dielectric layer and outer shielding layer: 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 25mm, to 3. detect qualified diameter through step then is that the first-stage semi-finished product of 8.6mm is inserted in the described external insulation magnesium oxide of this step porcelain knob pre-manufactured hole, be assembled into blank B, then described blank B being pulled to external diameter is to make the secondary semi-finished product behind the 12.3mm; Need in the drawing process described blank B is annealed;
5. the half-finished detection of secondary: the secondary semi-finished product that obtain through above-mentioned steps are carried out electric property detect, clean is also carried out to the half-finished outer surface of described secondary in qualified back;
6. the assembling of secondary semi-finished product and restrictive coating, drawing and annealing: will be in the gapless stainless steel tube or high temperature alloy pipes of 16mm through the step secondary semi-finished product that 5. to detect external diameter qualified and that clean is crossed the be 12.3mm external diameter of packing into, tube reducing drawing, annealing in process through multi-pass is 5.3mm until external diameter again, makes finished product.
Claims (3)
1. three-coaxial mineral insulated cable, comprise inner conductor layer, interior insulating medium layer, internal shield, external insulation dielectric layer, outer shielding layer and restrictive coating from inside to outside successively, it is characterized in that: insulating medium layer and/or external insulation dielectric layer are magnesium oxide, aluminium oxide or silicon dioxide in described.
2. three-coaxial mineral insulated cable according to claim 1 is characterized in that: described inner conductor layer is a copper core; Insulating medium layer and external insulation dielectric layer are magnesium oxide in described; Described internal shield and outer shielding layer are seamless copper pipe; Described sheath is gapless stainless steel tube or high temperature alloy steel pipe.
3. three-coaxial mineral insulated cable according to claim 2 is characterized in that: described copper core only has one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202006492U CN201594417U (en) | 2009-11-12 | 2009-11-12 | Triaxial mineral-insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202006492U CN201594417U (en) | 2009-11-12 | 2009-11-12 | Triaxial mineral-insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594417U true CN201594417U (en) | 2010-09-29 |
Family
ID=42776485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202006492U Expired - Lifetime CN201594417U (en) | 2009-11-12 | 2009-11-12 | Triaxial mineral-insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594417U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707076B (en) * | 2009-11-12 | 2011-09-07 | 久盛电气股份有限公司 | Three-coaxial mineral insulated cable and manufacturing method thereof |
| 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 |
| CN103236300A (en) * | 2013-01-05 | 2013-08-07 | 辽宁金环电缆有限公司 | Double-shielding cable for nuclear power |
| CN103872413A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | High-temperature-resistant and radiation-resistant radiofrequency coaxial cable |
| CN104284467A (en) * | 2014-10-21 | 2015-01-14 | 连建永 | Superaudio induction heating line |
| CN105609186A (en) * | 2016-03-30 | 2016-05-25 | 陶铠高分子材料（上海）科技中心 | Magnesium oxide mineral insulation fireproof cable and preparation method thereof |
| CN107240463A (en) * | 2017-06-30 | 2017-10-10 | 上海应用技术大学 | A kind of assembly method of the prefabricated Magnesium oxide knob insulator of mineral insulated cable |
| CN111223607A (en) * | 2020-01-13 | 2020-06-02 | 杭州慈源科技有限公司 | Fire-resistant lead |
-
2009
- 2009-11-12 CN CN2009202006492U patent/CN201594417U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707076B (en) * | 2009-11-12 | 2011-09-07 | 久盛电气股份有限公司 | Three-coaxial mineral insulated cable and manufacturing method thereof |
| 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 |
| CN103236300A (en) * | 2013-01-05 | 2013-08-07 | 辽宁金环电缆有限公司 | Double-shielding cable for nuclear power |
| CN103872413A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | High-temperature-resistant and radiation-resistant radiofrequency coaxial cable |
| CN104284467A (en) * | 2014-10-21 | 2015-01-14 | 连建永 | Superaudio induction heating line |
| CN105609186A (en) * | 2016-03-30 | 2016-05-25 | 陶铠高分子材料（上海）科技中心 | Magnesium oxide mineral insulation fireproof cable and preparation method thereof |
| CN107240463A (en) * | 2017-06-30 | 2017-10-10 | 上海应用技术大学 | A kind of assembly method of the prefabricated Magnesium oxide knob insulator of mineral insulated cable |
| CN111223607A (en) * | 2020-01-13 | 2020-06-02 | 杭州慈源科技有限公司 | Fire-resistant lead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100929 |
|
| CX01 | Expiry of patent term |