CN202259729U - Cable joint - Google Patents
Cable joint Download PDFInfo
- Publication number
- CN202259729U CN202259729U CN2011200995562U CN201120099556U CN202259729U CN 202259729 U CN202259729 U CN 202259729U CN 2011200995562 U CN2011200995562 U CN 2011200995562U CN 201120099556 U CN201120099556 U CN 201120099556U CN 202259729 U CN202259729 U CN 202259729U
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- China
- Prior art keywords
- sleeve
- cable
- cable joint
- silicone rubber
- joint
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- Expired - Lifetime
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Abstract
The utility model relates to the improvement to a cable joint. The cable joint is characterized in that a joint insulation sleeve pipe is formed by the gapless connection of an inner cold shrink silicone rubber sleeve and an outer thermoplastic sleeve. The gapless connection structure of the inner cold shrink silicone rubber sleeve and the outer thermoplastic sleeve is ingeniously employed, not only are advantages of the thermoplastic sleeve and the cold shrink sleeve performed, but also the ''breathing'' is consistent with the cable, the mechanical strength of the thermoplastic sleeve is high, the waterproofness and the flame resistance are good, the disadvantages of a single sleeve are overcome, no winding or cladding for waterproofness is required, construction time is saved, and the performance of the inner cold shrink silicone rubber sleeve and the outer thermoplastic sleeve is complemented to each other.
Description
Technical field
Utility model is the improvement to cable joint, relates in particular to a kind of good airproof performance, and mechanical strength is high, the joint coupling of cable of good flame resistance.
Background technology
Be the insulation property that effectively keep joint area during cable splice, outside the insulation of cable junction, increase shrinkage insulating case and protective sleeve (being called for short cable then) usually.The outer cable joint of existing cable junction insulation, a kind of for adopting the shrinkage cover of silicon rubber.Silicon rubber has good electrical insulation properties, but mechanical strength lower (hot strength has only about 7Mpa), tear resistance are poor, when receiving external force, ftracture easily; During the construction of silicon rubber shrinkage cable joint, the wrapped mode of insulation waterstop is adopted in sealing, and wrapped outside the silicon rubber insulation cover, actual sealing effectiveness is undesirable; Adding fire retardant in the silastic material can influence process industrial art performance greatly, and causing can't moulding and expansion, thereby does not actually have a silicone rubber for cable joint with good flame retardant effect, is unfavorable for that the flame retardant cable joint uses.
Another kind of the Thermal Shrinkage Cable Joint major ingredient is a polyolefin plastics in order to adopt the material contracting with heat cable joint, and (hot strength is greater than 12Mpa to have good mechanical property; Higher by about 70% than shrinkage material), advantage that tear resistance is strong; Make the ability of bearing external force improve greatly, and it is good to be coated with PUR contraction back sealing in the heat-shrinkable T bush, and material contracting with heat can reach the good flame effect through adding the fire proofing modification; Its oxygen index can reach and not reduce processing characteristics more than 30, and is identical with cable insulation.Yet the insulation property of material contracting with heat are slightly poor, especially can not with cable with " breathings ", produce potential safety hazard when causing joint area crooked easily in the joint, this is the deficiency of maximum.
Prior art also has the employing composite construction; For example the splice insulation of Chinese patent CN86106329 cable core seals core retainer plate; Comprise that refractory inorganic fiber material layer and one of one deck on the cable core joint wraps in hot charging sleeve pipe outside it, also has a cable gland that surrounds core retainer plate.Chinese patent CN2646922 pyrocondensation bag sheet inwardly is provided with swollen resin water blocking layer and butyl rubber resistance tide layer outside reducing place certainly at both ends.They still do not overcome the deficiency that adopts single shrink sleeve.Shown that by prior art the cable continued access has been single shrinkage shrink sleeve with shrinking protective sleeve since invention, this is not improved always.
Summary of the invention
The utility model purpose is to overcome the deficiency of above-mentioned prior art, and a kind of good airproof performance is provided, and mechanical strength is high, the cable joint of good flame resistance.
The utility model purpose realizes that main the improvement is that cable joint main insulation adopts the shrinkage silicone rubber sleeve, and oversheath adopts fire-retardant thermoplastic cover fit structure, thereby has overcome the deficiency of prior art, realizes the utility model purpose.Specifically, the utility model cable joint comprises being set in the outer insulating sleeve of cable joint, it is characterized in that said insulating sleeve does not have the gap fit basically by interior shrinkage silicone rubber sleeve and outer fire-retardant thermoplastic cover and forms.
In addition; For fire-retardant thermoplastic cover outside guaranteeing and joint two end cables and interior shrinkage silicone rubber sleeve good combination reach more reliable tightness; A kind of better is that outer fire-retardant thermoplastic cover adopts tapered diameter structure (tapering progressively reduces) from the middle to both ends; This structure more helps outer fire-retardant thermoplastic cover two ends and cable is held tightly, thereby reaches the sealing effectiveness that well blocks water.
The utility model cable joint is with respect to prior art, because shrinkage silicone rubber sleeve, outer fire-retardant thermoplastic cover do not have the gap shrink-fit structure basically in the ingenious employing; Not only given full play to interior shrinkage silicone rubber sleeve and outer fire-retardant thermoplastic overlaps advantage separately, like the superior isolation performance of interior shrinkage silicone rubber sleeve, can with cable with " breathing "; The mechanical strength of outer fire-retardant thermoplastic cover is high, the sealing that blocks water and good flame resistance, and overcome both shortcomings separately of son; Do not need wrapped blocking water; Save the engineering time, make both performance obtain complementation, for cable joint is protected novel splice insulation cover.
Below in conjunction with an exemplary embodiment; Utility model essence is further understood in exemplary illustration and help; But the embodiment detail only is in order utility model to be described, not to be represented utility model design whole technical schemes down, therefore should not be construed as the total technical scheme of utility model to be limited; Some are In the view of the technical staff; The unsubstantiality that does not depart from utility model design increases and/or changes, and simple the change or replacement of technical characterictic to have same or similar technique effect for example all truely used novel protected scope.
Description of drawings
Accompanying drawing utility model cable joint user mode sketch map.
Embodiment
Embodiment: referring to accompanying drawing; Cable joint; The copper pipe 2 of connection is arranged outside the conductor 1 of cable continued access, and connecting copper pipe has the interior shrinkage silicone rubber sleeve 3 that wraps to cable joint insulation 5 outward, and two ends have fills 6; Interior shrinkage silicone rubber sleeve 3 is outer have length greater than interior shrinkage silicone rubber sleeve 3 wrap to cable joint oversheath 7 and two ends tapered diameter, in be coated with the outer fire-retardant thermoplastic cover 4 of PUR, shrink in the back shrinkage silicone rubber sleeve and outer fire-retardant thermoplastic inner room and be and do not have the gap fit basically.
This patent said " not having the gap fit basically " is a kind of for being sheathed with obvious gap, can not limit to the accurate absolute no gap that is interpreted as on the complete mechanical.
Claims (4)
1. cable joint comprises being set in the outer insulating sleeve of cable joint, it is characterized in that said insulating sleeve does not have the gap fit basically by interior shrinkage silicone rubber sleeve and outer fire-retardant thermoplastic cover and forms.
2. according to the said cable joint of claim 1, the shrinkage silicone rubber sleeve is shorter in length than outer fire-retardant thermoplastic cover in it is characterized in that.
3. according to the said cable joint of claim 2, there is filling at shrinkage silicone rubber sleeve two ends in it is characterized in that.
4. according to claim 1,2 or 3 said cable joints, it is characterized in that outer fire-retardant thermoplastic cover is tapered diameter structure from the middle to both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200995562U CN202259729U (en) | 2011-04-08 | 2011-04-08 | Cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200995562U CN202259729U (en) | 2011-04-08 | 2011-04-08 | Cable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259729U true CN202259729U (en) | 2012-05-30 |
Family
ID=46120921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200995562U Expired - Lifetime CN202259729U (en) | 2011-04-08 | 2011-04-08 | Cable joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259729U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743120A (en) * | 2013-12-17 | 2014-04-23 | 齐长义 | Anti-crack and anti-explosion solar glass evacuated collector tube and manufacturing method thereof |
| CN105802239A (en) * | 2016-03-22 | 2016-07-27 | 天津汇润赢防爆电器有限公司 | Quick coupler for high-voltage cables |
| CN106469899A (en) * | 2015-08-19 | 2017-03-01 | 浙江正泰电缆有限公司 | A kind of gum cover cable water-blocking joint structure and preparation method thereof |
| CN108448261A (en) * | 2018-03-22 | 2018-08-24 | 中国科学院深海科学与工程研究所 | A kind of quick joining method of deep sea water tight electric cable |
| CN111129870A (en) * | 2019-11-26 | 2020-05-08 | 山东航天电子技术研究所 | Device for reinforcing continuous rear joints of wires of different specifications |
-
2011
- 2011-04-08 CN CN2011200995562U patent/CN202259729U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743120A (en) * | 2013-12-17 | 2014-04-23 | 齐长义 | Anti-crack and anti-explosion solar glass evacuated collector tube and manufacturing method thereof |
| CN106469899A (en) * | 2015-08-19 | 2017-03-01 | 浙江正泰电缆有限公司 | A kind of gum cover cable water-blocking joint structure and preparation method thereof |
| CN105802239A (en) * | 2016-03-22 | 2016-07-27 | 天津汇润赢防爆电器有限公司 | Quick coupler for high-voltage cables |
| CN105802239B (en) * | 2016-03-22 | 2019-06-14 | 天津汇润赢防爆电器有限公司 | High-tension cable quick connector |
| CN108448261A (en) * | 2018-03-22 | 2018-08-24 | 中国科学院深海科学与工程研究所 | A kind of quick joining method of deep sea water tight electric cable |
| CN111129870A (en) * | 2019-11-26 | 2020-05-08 | 山东航天电子技术研究所 | Device for reinforcing continuous rear joints of wires of different specifications |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214242 Jiangsu Province, Wuxi City Industrial Park, the western suburbs of Yixing Zhenfeng Road No. 999 Patentee after: JIANGSU ZHONGCHAO HOLDING CO., LTD. Address before: 214242 Jiangsu Province, Wuxi City Industrial Park, the western suburbs of Yixing Zhenfeng Road No. 999 Patentee before: Jiangsu Zhongchao Cable Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |