CN102364613A - Method for manufacturing metal shielding layer of 'SZ' type copper-wire-shielded medium-voltage cable - Google Patents
Method for manufacturing metal shielding layer of 'SZ' type copper-wire-shielded medium-voltage cable Download PDFInfo
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- CN102364613A CN102364613A CN2011102946993A CN201110294699A CN102364613A CN 102364613 A CN102364613 A CN 102364613A CN 2011102946993 A CN2011102946993 A CN 2011102946993A CN 201110294699 A CN201110294699 A CN 201110294699A CN 102364613 A CN102364613 A CN 102364613A
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Abstract
The invention discloses a method for manufacturing a metal shielding layer of an 'SZ' type copper-wire-shielded medium-voltage cable. The twisting pitch of the metal shielding layer is partitioned into a front half section and a back half section; when a power cable moves forward at a certain speed, a process for forming the front half section of the twisting pitch comprises the following steps of: clockwise rotating a plurality of metal wires by a first angle to clockwise wrap the metal wires on the surface of an insulating layer; and fixing the tail end of the front half section; and when the power cable moves forward at a certain speed, a process for forming the back half section of the twisting pitch comprises the following steps of: anticlockwise rotating a plurality of metal wires by a second angle to anticlockwise wrap the metal wires on the surface of an insulating layer; and fixing the tail end of the back half section. In the method for manufacturing the metal shielding layer, the problem of cable damage hidden trouble caused by the increase in the cable binding force of the copper wire shielding layer when a heated inner layer wire core expands after the cable runs can be solved effectively.
Description
Technical field
The present invention relates to a kind of power cable, relate in particular to the metallic shield layer manufacturing method of a kind of " SZ " type copper wire shielding midium voltage cable.
Background technology
Existing single-phase copper wire shielding adopt stranded dredge around pattern; When adopt stranded dredge around the time, the copper wire layer has bigger one to tighten power, the expansion in cable operation back because of the internal layer core to the core of internal layer; Comparatively speaking copper wire to core to tighten power bigger; This power of tightening of going down for a long time can influence the variation of semi-conductive layer thickness, even hurts insulation, and is very big to the effect on service life of cable.Studying a kind of effective solution midium voltage cable copper wire shielding mode is very important.Therefore, design a kind of metal screen layer weaving method that is used for power cable, can effectively solve the expansion of cable operation back because of the internal layer core, the copper wire problem bigger to the power of tightening of core becomes the direction that those of ordinary skills make great efforts comparatively speaking.
Summary of the invention
The present invention provides a kind of " SZ ", and the type copper wire shields the metallic shield layer manufacturing method of midium voltage cable; When this metallic shield layer manufacturing method is heated the expansion of internal layer core after cable operation, can effectively avoid because copper wire screen cable is tightened power increases the cable that causes and damage potential problem.
For achieving the above object; The technical scheme that the present invention adopts is: metal screen layer and external sheath layer that the metallic shield layer manufacturing method of a kind of " SZ " type copper wire shielding midium voltage cable, said power cable comprise conductor element, insulating barrier, are made up of some one metal wires;
The twisting pitch of said metal screen layer is divided into preceding half section and second half section;
When said power cable travels forward by certain speed; Preceding half section formation technology of said twisting pitch does; Said some one metal wires rotate first angle along clockwise direction; Thereby these some one metal wires are wrapped along clockwise direction in said surface of insulating layer, and then fixing half section end before this;
When said power cable travels forward by certain speed; The second half section of said twisting pitch forms technology; Said some one metal wires are along counterclockwise rotating second angle; Thereby these some one metal wires are wrapped in said surface of insulating layer along counter clockwise direction, and then the end of fixing this second half section; Said first angle equates with second angle.
Related content in the technique scheme is explained as follows:
1, in the such scheme, said first angle and second angle are and are about 270 °.
2, in the such scheme, said wire for the electrician with soft copper silk or zinc-plated soft copper silk.
Because the technique scheme utilization, the present invention compared with prior art has advantage:
The present invention is used for the metal screen layer weaving method of power cable when cable heated expands, solved in the prior art because shielding of unidirectional copper wire or the shielding of braiding copper wire are tightened power to the cable insulation core, thereby to the cause damage problem of hidden danger of cable; And the bending property of its cable of the present invention is better, and farther much smaller than the unidirectional stranded power of tightening of copper wire to the power of tightening of core, and can suitably adjust, and has eliminated the hidden danger of damaging cable because of the power of tightening of copper wire shielding greatly basically.
Description of drawings
Accompanying drawing 1 is the metallic shield layer manufacturing method sketch map one of the present invention " SZ " type copper wire shielding midium voltage cable;
Accompanying drawing 2 is the metallic shield layer manufacturing method sketch map two of the present invention " SZ " type copper wire shielding midium voltage cable.
In the above accompanying drawing: 1, conductor element; 2, insulating barrier; 3, metal screen layer; 4, external sheath layer; 5, wire.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Embodiment: the metallic shield layer manufacturing method of a kind of " SZ " type copper wire shielding midium voltage cable,
Metal screen layer and external sheath layer 4 that said power cable comprises conductor element 1, insulating barrier 2, is made up of some one metal wires 5; The twisting pitch of said metal screen layer 3 is divided into preceding half section and second half section;
When said power cable travels forward by certain speed; Preceding half section formation technology of said twisting pitch does; Said some one metal wires 5 rotate first angle along clockwise direction; Thereby these some one metal wires 5 are wrapped along clockwise direction in said insulating barrier 2 surfaces, and then fixing half section end before this;
When said power cable travels forward by certain speed; The second half section of said twisting pitch forms technology; Said some one metal wires 5 are along counterclockwise rotating second angle; Thereby these some one metal wires 5 are wrapped in said insulating barrier 2 surfaces along counter clockwise direction, and then the end of fixing this second half section; Said first angle equates with second angle.
Above-mentioned first angle and second angle are and are about 270 °.
Above-mentioned wire 5 for the electrician with soft copper silk or zinc-plated soft copper silk.
When adopting the metallic shield layer manufacturing method of above-mentioned " SZ " type copper wire shielding midium voltage cable, solved in the prior art because shielding of unidirectional copper wire or the shielding of braiding copper wire are tightened power to the cable insulation core, thereby to the cause damage problem of hidden danger of cable; And the bending property of its cable of the present invention is better, and farther much smaller than the unidirectional stranded power of tightening of copper wire to the power of tightening of core, and can suitably adjust, and has eliminated the hidden danger of damaging cable because of the power of tightening of copper wire shielding greatly basically.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. metal screen layer and external sheath layer that the metallic shield layer manufacturing method of " SZ " type copper wire shielding midium voltage cable, said power cable comprise conductor element, insulating barrier, are made up of some one metal wires; It is characterized in that:
The twisting pitch of said metal screen layer is divided into preceding half section and second half section;
When said power cable travels forward by certain speed; Preceding half section formation technology of said twisting pitch does; Said some one metal wires rotate first angle along clockwise direction; Thereby these some one metal wires are wrapped along clockwise direction in said surface of insulating layer, and then fixing half section end before this;
When said power cable travels forward by certain speed; The second half section of said twisting pitch forms technology; Said some one metal wires are along counterclockwise rotating second angle; Thereby these some one metal wires are wrapped in said surface of insulating layer along counter clockwise direction, and then the end of fixing this second half section; Said first angle equates with second angle.
2. metallic shield layer manufacturing method according to claim 1 is characterized in that: said first angle and second angle are and are about 270 °.
3. metallic shield layer manufacturing method according to claim 1 is characterized in that: said wire for the electrician with soft copper silk or zinc-plated soft copper silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102946993A CN102364613A (en) | 2011-10-08 | 2011-10-08 | Method for manufacturing metal shielding layer of 'SZ' type copper-wire-shielded medium-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102946993A CN102364613A (en) | 2011-10-08 | 2011-10-08 | Method for manufacturing metal shielding layer of 'SZ' type copper-wire-shielded medium-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102364613A true CN102364613A (en) | 2012-02-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102946993A Pending CN102364613A (en) | 2011-10-08 | 2011-10-08 | Method for manufacturing metal shielding layer of 'SZ' type copper-wire-shielded medium-voltage cable |
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| Country | Link |
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| CN (1) | CN102364613A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001008167A1 (en) * | 1999-07-22 | 2001-02-01 | Belden Wire & Cable Company | High performance data cable and a ul 910 plenum non-fluorinated jacket high performance data cable |
| US6815611B1 (en) * | 1999-06-18 | 2004-11-09 | Belden Wire & Cable Company | High performance data cable |
| CN201622892U (en) * | 2009-12-24 | 2010-11-03 | 中国电子科技集团公司第二十三研究所 | Bipatch star quadding machine |
| CN201812558U (en) * | 2010-05-25 | 2011-04-27 | 宁波康兴电缆有限公司 | 'SZ'-shaped copper wire shielding layer of wire and cable |
-
2011
- 2011-10-08 CN CN2011102946993A patent/CN102364613A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6815611B1 (en) * | 1999-06-18 | 2004-11-09 | Belden Wire & Cable Company | High performance data cable |
| WO2001008167A1 (en) * | 1999-07-22 | 2001-02-01 | Belden Wire & Cable Company | High performance data cable and a ul 910 plenum non-fluorinated jacket high performance data cable |
| CN201622892U (en) * | 2009-12-24 | 2010-11-03 | 中国电子科技集团公司第二十三研究所 | Bipatch star quadding machine |
| CN201812558U (en) * | 2010-05-25 | 2011-04-27 | 宁波康兴电缆有限公司 | 'SZ'-shaped copper wire shielding layer of wire and cable |
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Application publication date: 20120229 |