CN204315262U - Anti-internal stress fission cable - Google Patents
Anti-internal stress fission cable Download PDFInfo
- Publication number
- CN204315262U CN204315262U CN201420845241.1U CN201420845241U CN204315262U CN 204315262 U CN204315262 U CN 204315262U CN 201420845241 U CN201420845241 U CN 201420845241U CN 204315262 U CN204315262 U CN 204315262U
- Authority
- CN
- China
- Prior art keywords
- cable
- overcoat
- internal stress
- coated
- insulating barrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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- 230000004992 fission Effects 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 25
- 230000004888 barrier function Effects 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 8
- 238000005336 cracking Methods 0.000 abstract description 6
- 238000005286 illumination Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000005253 cladding Methods 0.000 abstract description 3
- 239000011241 protective layer Substances 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 23
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a kind of anti-internal stress fission cable, there are 4 ~ 6 heart yearns, described heart yearn annular is uniform and its line of centres forms regular polygon, heart yearn outer wall is coated with insulating barrier, insulating barrier periphery is coated with overcoat, be interconnected to constitute the overall structure of multi-connecting-rod mechanism between adjacent overcoat by the connecting portion of same material, described cable center has the vented cavity that surrounding is surrounded by overcoat and connecting portion, extends distribute heat along cable axis.The utility model is by the improvement to heart yearn arrangement and protective layer structure, make the multi-connecting-rod mechanism that between the overcoat of cladding core wire, formation one is unstable, the overcoat of multi-connecting-rod mechanism can carry out distortion along with the internal stress produced by cold and hot change and illumination variation, internal stress is effectively discharged by the change of overcoat, thus decrease cable shield cracking phenomena, extend the useful life of cable.
Description
Technical field
The utility model relates to technical field of electric wires and cables, especially a kind of anti-internal stress fission cable.
Background technology
Along with the development of economic society, the application of cable in industry-by-industry is more and more extensive.Generally speaking; cable is usually all mounted in pipeline or exposes in atmosphere; cable is after being subject to long cold and hot difference variation and illumination variation; cable inside there will be the phenomenon of expanding with heat and contract with cold and produces interior varying stress; because cable is as a whole; there is not the space of Stress Release in cable inside; therefore the interior varying stress produced is easy to cause breaking of Exterior cable protective layer; there is the problem that heart yearn is exposed; thus affecting the normal use of cable, the useful life of cable also cannot meet the demands.
Utility model content
The technical problems to be solved in the utility model is: overcome the deficiency in prior art, provides a kind of and can discharge the internal stress produced because of cold and hot change, the anti-internal stress fission cable breaking, extend cable useful life effectively preventing Exterior cable overcoat.
The utility model solves the technical scheme that its technical problem adopts: a kind of anti-internal stress fission cable, there are 4 ~ 6 heart yearns, described heart yearn annular is uniform and its line of centres forms regular polygon, heart yearn outer wall is coated with insulating barrier, insulating barrier periphery is coated with overcoat, be interconnected to constitute the overall structure of multi-connecting-rod mechanism between adjacent overcoat by the connecting portion of same material, described cable center has the vented cavity that surrounding is surrounded by overcoat and connecting portion, extends distribute heat along cable axis.
Described protection coating materials is PVC or polyurethane or silicon rubber; Described insulating layer material is PVC or XLPE or silicon rubber.
Described insulating barrier outer wall is coated with the first bed course, is coated with the screen that can reduce electromagnetic interference at the outer wall of the first bed course, by screen interaction energy shielding external interference signals, guarantees the accuracy of cable transmission signal.
For reducing the sharp position of screen to the damage of overcoat, between described screen and overcoat, be provided with the second bed course of interval and protective effect.
The first described bed course and the material of the second bed course are polyester or PP or nonwoven fabrics.
The beneficial effects of the utility model are: the utility model is by improving the structure of heart yearn arrangement and overcoat, make the multi-connecting-rod mechanism that between the overcoat of cladding core wire, formation one is unstable, because multi-connecting-rod mechanism can carry out distortion along with the internal stress produced by cold and hot change and illumination variation, internal stress is made to obtain effective release by the change of overcoat, thus decrease cable shield cracking phenomena, extend the useful life of cable; Vented cavity can distribute the heat that cable produces in time, reduces cable owing to sending out distortion thermogenetic, prevents the strain cracking of cable further.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is further illustrated.
Fig. 1 is the structural representation of the first execution mode of the utility model.
Fig. 2 is the principle schematic of the first execution mode of the utility model.
Fig. 3 is stress and the Strain Distribution schematic diagram of AB section in Fig. 2.
Fig. 4 is stress and the Strain Distribution schematic diagram of AC section in Fig. 2.
Fig. 5 is the structural representation of the utility model the second execution mode.
Fig. 6 is the structural representation of the third execution mode of the utility model.
1. heart yearn 2. insulating barrier 3. overcoat 4. connecting portion 5. vented cavity 6. first bed course 7. screen 8. second bed courses in figure
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1 be the structural representation of the first execution mode of the utility model, a kind of anti-internal stress fission cable, there is the heart yearn 1 that four annulars are uniform, the line of centres of four heart yearns 1 forms square, the insulating barrier 2 that material is PVC is coated with at the outer wall of every root heart yearn 1, described insulating barrier 2 outer wall is coated with the first bed course 6, is coated with the screen 7 that can reduce electromagnetic interference at the outer wall of the first bed course 6.
Screen 7 outer wall is coated with the overcoat 3 that material is PVC, be interconnected by the connecting portion 4 with material between adjacent overcoat 3, connect into integrally-built overcoat 3 and connecting portion 4 forms quadric chain, described cable center has along cable axis extension, for distributing the vented cavity 5 of cable work calories, this vented cavity 5 surrounding surrounded by the inner side of overcoat 3 and connecting portion 4.
Because screen 7 is made of metal usually, sharp position may be there is and damage overcoat 3, between screen 7 and overcoat 3, being therefore provided with the second bed course 8 of interval and protective effect.
The material of above-mentioned first bed course 6 and the second bed course 8 is polyester.
As Fig. 2 be the utility model for the principle schematic of the first execution mode, and with A, B, C, D, mark is numbered to each heart yearn.When cable laying, top is subject to strong illumination, the stress and strain distribution AB section as shown in Figure 3 that cable inside produces and the AC section shown in Fig. 4, wherein σ represents stress, Δ represents strain, AC bar and BD bar outwards stretch with arc around C, D fulcrum because top is heated simultaneously, cable now can Free Transform thus material internal can not produce extra stress, and cable material also would not produce fatigue damage; Upon a drop in temperature, AB bar is just in time contrary with the stress suffered by AC bar, catches a cold and AC bar and BD bar are inwardly shortened with arc around C, D fulcrum in cable top, thus cable material inside can not produce extra stress, the safe handling of protection cable.When this whole cable is heated or temperature decline, four bar structures in schematic diagram can outwards stretch simultaneously or inwardly bounce back, and make can not produce extra stress in cable material, thus protect cable injury-free or aging.The design of this special construction can protect cable to avoid illumination or the aging or cracking brought that expands with heat and contract with cold just.
As shown in Figure 5 be the structural representation of the utility model the second execution mode, a kind of anti-internal stress fission cable, there is the heart yearn 1 that five annulars are uniform, the line of centres of five heart yearns 1 forms regular pentagon, the insulating barrier 2 that material is XLPE is coated with at the outer wall of every root heart yearn 1, described insulating barrier 2 outer wall is coated with the first bed course 6, is coated with the screen 7 that can reduce electromagnetic interference at the outer wall of the first bed course 6.
Screen 7 outer wall is coated with the overcoat 3 that material is polyurethane, be interconnected by the connecting portion 4 with material between adjacent overcoat 3, connect into integrally-built overcoat 3 and connecting portion 4 forms five-bar mechanism, described cable center has along cable axis extension, for distributing the vented cavity 5 of cable work calories, this vented cavity 5 surrounding surrounded by the inner side of overcoat 3 and connecting portion 4.
Because screen 7 is made of metal usually, sharp position may be there is and damage overcoat 3, between screen 7 and overcoat 3, being therefore provided with the second bed course 8 of interval and protective effect.
The material of above-mentioned first bed course 6 and the second bed course 8 is PP.
As shown in Figure 6 be the structural representation of the third execution mode of the utility model, a kind of anti-internal stress fission cable, there is the heart yearn 1 that six roots of sensation annular is uniform, the line of centres of six roots of sensation heart yearn 1 forms regular hexagon, the insulating barrier 2 that material is silicon rubber is coated with at the outer wall of every root heart yearn 1, described insulating barrier 2 outer wall is coated with the first bed course 6, is coated with the screen 7 that can reduce electromagnetic interference at the outer wall of the first bed course 6.
Screen 7 outer wall is coated with the overcoat 3 that material is silicon rubber, be interconnected by the connecting portion 4 with material between adjacent overcoat 3, connect into integrally-built overcoat 3 and connecting portion 4 forms six bar mechanism, described cable center has along cable axis extension, for distributing the vented cavity 5 of cable work calories, this vented cavity 5 surrounding surrounded by the inner side of overcoat 3 and connecting portion 4.
Because screen 7 is made of metal usually, sharp position may be there is and damage overcoat 3, between screen 7 and overcoat 3, being therefore provided with the second bed course 8 of interval and protective effect.
The material of above-mentioned first bed course 6 and the second bed course 8 is nonwoven fabrics.
The utility model is by improving the structure of heart yearn 1 arrangement and overcoat 3, make the multi-connecting-rod mechanism that between the overcoat 3 of cladding core wire 1, formation one is unstable, because multi-connecting-rod mechanism can carry out distortion along with the internal stress produced by cold and hot change and illumination variation, internal stress is made to obtain effective release by the change of overcoat 3, thus decrease cable shield 3 cracking phenomena, extend the useful life of cable; The heat produced when vented cavity 5 can distribute cable work is in time set, reduces cable due to the distortion caused of generating heat, prevent the strain cracking of cable further.
Above-mentioned execution mode is only for illustrating technical conceive of the present utility model and feature; its object is to person skilled in the art can be understood content of the present utility model and be implemented; protection range of the present utility model can not be limited with this; all equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed in protection range of the present utility model.
Claims (6)
1. an anti-internal stress fission cable, there are 4 ~ 6 heart yearns (1), it is characterized in that: described heart yearn (1) annular is uniform and its line of centres forms regular polygon, heart yearn (1) outer wall is coated with insulating barrier (2), insulating barrier (2) periphery is coated with overcoat (3), by being interconnected to constitute the overall structure of multi-connecting-rod mechanism with the connecting portion (4) of material between adjacent overcoat (3), described cable center has surrounding and is surrounded by overcoat (3) and connecting portion (4), the vented cavity (5) of distribute heat is extended along cable axis.
2. anti-internal stress fission cable according to claim 1, is characterized in that: described overcoat (3) material is PVC or polyurethane or silicon rubber.
3. anti-internal stress fission cable according to claim 1, is characterized in that: described insulating barrier (2) material is PVC or XLPE or silicon rubber.
4. anti-internal stress fission cable according to claim 1, it is characterized in that: described insulating barrier (2) outer wall is coated with the first bed course (6), be coated with the screen (7) that can reduce electromagnetic interference at the outer wall of the first bed course (6).
5. anti-internal stress fission cable according to claim 4, is characterized in that: the second bed course (8) being provided with interval and protective effect between described screen (7) and overcoat (3).
6. anti-internal stress fission cable according to claim 5, is characterized in that: described the first bed course (6) and the material of the second bed course (8) are polyester or PP or nonwoven fabrics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420845241.1U CN204315262U (en) | 2014-12-26 | 2014-12-26 | Anti-internal stress fission cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420845241.1U CN204315262U (en) | 2014-12-26 | 2014-12-26 | Anti-internal stress fission cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204315262U true CN204315262U (en) | 2015-05-06 |
Family
ID=53137565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420845241.1U Active CN204315262U (en) | 2014-12-26 | 2014-12-26 | Anti-internal stress fission cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204315262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575765A (en) * | 2014-12-26 | 2015-04-29 | 江苏昌盛电缆集团有限公司 | Cable with internal stress cracking resistance function |
-
2014
- 2014-12-26 CN CN201420845241.1U patent/CN204315262U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575765A (en) * | 2014-12-26 | 2015-04-29 | 江苏昌盛电缆集团有限公司 | Cable with internal stress cracking resistance function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20161010 Granted publication date: 20150506 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20171010 Granted publication date: 20150506 |
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| PP01 | Preservation of patent right |
Effective date of registration: 20171010 Granted publication date: 20150506 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20180410 Granted publication date: 20150506 |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180411 Granted publication date: 20150506 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230411 Granted publication date: 20150506 |
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| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230411 Granted publication date: 20150506 |