CN200941320Y - Conversion power cable for mine - Google Patents
Conversion power cable for mine Download PDFInfo
- Publication number
- CN200941320Y CN200941320Y CN 200620087760 CN200620087760U CN200941320Y CN 200941320 Y CN200941320 Y CN 200941320Y CN 200620087760 CN200620087760 CN 200620087760 CN 200620087760 U CN200620087760 U CN 200620087760U CN 200941320 Y CN200941320 Y CN 200941320Y
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Abstract
The utility model discloses a coal mine frequency-converted power cable, whereof a cable core consists of three power core wires(1) and a conductor(4) of grounded core wires which consists of three wires, arranged respectively in clearances between the three power core wires(1) and distributed with the grounded core wire central symmetrically. A mental shielding layer(6) is arranged between an external intertwined semi-conductive cloth tape layer(8) and a belting back extrusion package sheath(7). Since the utility model uses three grounded core wires arranged in the clearances between three power core wires, the power electricity cable is protected by reducing or eliminating inductive harmonic wave caused by converted frequency. Meanwhile, the mental shielding layer arranged between the external intertwined semi-conductive cloth tape layer and the belting back extrusion package sheath is capable of effectively shield the interference to external electrical equipments to assure normal performance of electrical equipments underground and improve safety of underground work.
Description
Invention field
The utility model relates to a kind of power cable, be specifically under a kind of coal mine belt conveyer and coal-winning machine with the improvement of frequency conversion power cable structure.
Technical background
Usually belt conveyer and the employed power cable of coal-winning machine under the coal mine are generally formed cable core by three power cores and a ground connection core, extrude sheath behind the outer band of cable core.When the power cable of this structure is used for that belt conveyer is connected with frequency converter with the coal-winning machine variable-frequency motor under the coal mine, a because symmetry of its structure, when under the frequency conversion state, working, can not eliminate or reduce the induced harmonics that produces by frequency conversion, the power core bears the harmonic voltage that surpasses operating voltage own, easily puncture, be damaged, in addition owing to there is not total metal screen layer, the harmonic wave that frequency conversion produced, electric equipment to external world also can impact, and causes communication or other controllers to lose efficacy.Before the utility model design is finished, do not see the power cable identical as yet and under coal mine, use and sell with the utility model structure, it is on the books in the literature also not see the power cable identical with the utility model structure.
Summary of the invention
The purpose of this utility model is to provide a kind of colliery frequency conversion power cable; can effectively reduce or eliminate the induced harmonics that produces by frequency conversion; reduce the harmonic voltage that the power core is born; thereby protected power cable; simultaneously; can also effectively shield interference, improve the fail safe of underground work outside electric equipment.
For achieving the above object, the utility model adopts following technical proposals:
A kind of colliery frequency conversion power cable, form cable core by three power cores and ground connection core, the power core has insulating barrier and screen outward, the ground connection core has screen outward, and the outer wrapped semi-conductive cloth tape layer of cable core extrudes sheath behind its outer band, said ground connection core is three, place three power core gaps respectively, the distribution that is centrosymmetric of power core and ground connection core, extruding behind wrapped outside semi-conductive cloth tape layer and the said band has metal screen layer between the sheath.
In technique scheme, said metal screen layer is braiding copper wire braid, wrapped aluminium-plastic tape, wrapped copper wire or copper strips.
In technique scheme, extruding sheath behind the said band is high flame retardant neoprene, chlorosulfonated polyethylene or haloflex.
The utility model has following described good effect:
Because adopting the ground connection core is three; place three power core gaps respectively; the distribution that is centrosymmetric of power core and ground connection core; reduce or eliminated the induced harmonics that produces by frequency conversion; reduce the harmonic voltage that the power core is born; thereby protected power cable; simultaneously; extrude behind wrapped outside semi-conductive cloth tape layer and the said band and be provided with metal screen layer between the sheath; can effectively shield interference to outside electric equipment; guarantee the normal operation of down-hole electric equipment, improve the fail safe of underground work.
Embodiment
Below in conjunction with drawings and Examples structure of the present utility model is done explanation in further detail:
Fig. 1 is the structural representation of the utility model embodiment 1.
The 1st, power core, the 2nd, insulating barrier, the 3rd, screen, the 4th, earth connection core conductor, the 5th, screen, the 6th, metal screen layer, the 7th, sheath, the 8th, semi-conductive cloth tape layer.
Embodiment 1:
A kind of conversion power cable for mine is made up of three power cores (1) and earth connection core conductor (4) Insulating barrier (2) and semiconductive shielding layer (3), earth connection core conductor (4) are arranged outside the cable core, power core (1) Screen layer (5) is arranged outward, and the outer wrapped semi-conductive cloth tape layer (8) of cable core extrudes sheath (7) behind its outer band, It is characterized in that said earth connection core conductor (4) is three, places respectively between three power cores (1) In the crack, power core (1) and ground connection core (4) be centrosymmetric distribution, outside wrapped semi-conductive cloth tape Metal screen layer (6) is arranged, said metal screen layer (6) between layer (8) and the said sheath (7) Be braiding proof copper-wire braided layer, said sheath (7) is made for the high flame retardant neoprene.
Said power core (1) is formed by stranded copper wire is stranded, the diameter of per share copper wire is 0.5mm, earth connection core conductor (4) is formed by stranded copper wire is stranded, the diameter of per share copper wire is 0.4mm, and earth connection core conductor (4) outer shielding layer (5) is made by semiconductive ethylene-propylene rubber, power core (1) external insulation layer (2) is made by rubber in the second, thickness is 2.5mm, and power core (1) out semiconductor layer (3) is a semi-conductive cloth tape, and the thickness of sheath (7) is 6.0mm.
Claims (3)
1, a kind of colliery frequency conversion power cable, form cable core by three power cores (1) and earth connection core conductor (4), insulating barrier (2) and screen (3) are arranged outside the power core (1), screen (5) is arranged outside the earth connection core conductor (4), the outer wrapped semi-conductive cloth tape layer (8) of cable core, extrude sheath (7) behind its outer band, it is characterized in that said ground connection core (4) is three, place three power cores (1) gap respectively, the distribution that is centrosymmetric of power core and ground connection core, extruding behind wrapped outside semi-conductive cloth tape layer (8) and the said band has metal screen layer (6) between the sheath (7).
2, frequency conversion power cable in colliery according to claim 1 is characterized in that said metal screen layer (6) is braiding copper wire braid, wrapped aluminium-plastic tape, wrapped copper wire or copper strips.
3, frequency conversion power cable in colliery according to claim 1 is characterized in that extruding sheath (7) behind the said band is high flame retardant neoprene, chlorosulfonated polyethylene or haloflex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620087760 CN200941320Y (en) | 2006-08-08 | 2006-08-08 | Conversion power cable for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620087760 CN200941320Y (en) | 2006-08-08 | 2006-08-08 | Conversion power cable for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941320Y true CN200941320Y (en) | 2007-08-29 |
Family
ID=38747496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620087760 Expired - Fee Related CN200941320Y (en) | 2006-08-08 | 2006-08-08 | Conversion power cable for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200941320Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262937A (en) * | 2011-07-22 | 2011-11-30 | 江苏中煤电缆股份有限公司 | Rubber jacketed flexible cable for coal mine frequency conversion device |
| CN102394139A (en) * | 2011-11-21 | 2012-03-28 | 江苏通鼎光电股份有限公司 | Frequency conversion cable |
| CN102543296A (en) * | 2012-03-22 | 2012-07-04 | 江苏中煤电缆股份有限公司 | Composite-rubber jacketed flexible cable |
| CN102568690A (en) * | 2011-12-08 | 2012-07-11 | 上海摩恩电气股份有限公司 | Frequency conversion cable used capable of restraining higher harmonic |
| CN111681812A (en) * | 2020-04-26 | 2020-09-18 | 南京全信传输科技股份有限公司 | Nuclear-electromagnetic-resistant large-current flexible flat cable |
| CN111681825A (en) * | 2019-03-11 | 2020-09-18 | 精工爱普生株式会社 | Cables and Ultrasonic Devices |
-
2006
- 2006-08-08 CN CN 200620087760 patent/CN200941320Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262937A (en) * | 2011-07-22 | 2011-11-30 | 江苏中煤电缆股份有限公司 | Rubber jacketed flexible cable for coal mine frequency conversion device |
| CN102394139A (en) * | 2011-11-21 | 2012-03-28 | 江苏通鼎光电股份有限公司 | Frequency conversion cable |
| CN102568690A (en) * | 2011-12-08 | 2012-07-11 | 上海摩恩电气股份有限公司 | Frequency conversion cable used capable of restraining higher harmonic |
| CN102543296A (en) * | 2012-03-22 | 2012-07-04 | 江苏中煤电缆股份有限公司 | Composite-rubber jacketed flexible cable |
| CN111681825A (en) * | 2019-03-11 | 2020-09-18 | 精工爱普生株式会社 | Cables and Ultrasonic Devices |
| CN111681812A (en) * | 2020-04-26 | 2020-09-18 | 南京全信传输科技股份有限公司 | Nuclear-electromagnetic-resistant large-current flexible flat cable |
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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 |
Owner name: QINGDAO HANLAN CO., LTD. Free format text: FORMER NAME OR ADDRESS: QINGDAO HANLAN GROUP CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Laoshan District Shazikou Street office in Shandong province Qingdao City Shuanghe village, zip code: 266102 Patentee after: Qingdao Hanhe Cable Co., Ltd. Address before: Laoshan District Shazikou Street office in Shandong province Qingdao City Shuanghe village, zip code: 266102 Patentee before: Qingdao HanHe Cable Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |