CN2346040Y - Nuclear electric cable with low-smoke no-halogen flame-proof cross-linked polyolefine insulated material - Google Patents
Nuclear electric cable with low-smoke no-halogen flame-proof cross-linked polyolefine insulated material Download PDFInfo
- Publication number
- CN2346040Y CN2346040Y CN 98204910 CN98204910U CN2346040Y CN 2346040 Y CN2346040 Y CN 2346040Y CN 98204910 CN98204910 CN 98204910 CN 98204910 U CN98204910 U CN 98204910U CN 2346040 Y CN2346040 Y CN 2346040Y
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- Prior art keywords
- low
- smoke
- halogen
- cable
- halogen flame
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- Expired - Lifetime
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Abstract
The utility model belongs to a cable, relating to an insulation structure of a nuclear electric cable. A film insulation layer which is wound on the wire core of a conductive body is arranged between the wire core and the low-smoke no-halogen flameproof cross-linked polyolefine insulated material of the conductive body. The utility model solves the problem that low-smoke no-halogen flameproof cross-linked polyolefine insulated material has low insulating resistance value. The utility model has simple manufacturing process.
Description
The utility model belongs to cable, relates to a kind of insulation system of examining grade electrical cable.
Make low-smoke halogen-free inflaming-retarding cable polyolefin commonly used as insulation and sheath material, its fire resistance is inevitable mixes in right amount as fire retardants such as aluminium hydroxides in order to increase, test shows, and its insulating resistance value of above-mentioned insulating material that is mixed with fire retardant must descend.Its structure of electrical cable that just is applied to nuclear power station at present can not satisfy fire-retardant and the satisfactory needs of the equal energy of insulation, such cable has two kinds of typical structures usually, a kind of is that the outside of the crosslinked polyetylene insulated layer of conductor extrudes thermoplastic low-smoke halogen-free flame-retardant sheath, and its main deficiency is that fire resistance is relatively poor.Another kind is the low-smoke halogen-free flame-retardant isolating layer that conductor thread core only is provided with cross-linking radiation, and because of having added fire retardant in its insulating barrier, its insulating resistance value is lower.
The purpose of this utility model provides a kind of low-smoke non-halogen flame-retardant cross-linked polyolefin insulated nuclear electric cable that solves low this contradiction of insulating resistance of cable value when adopting cross-linked polyolefin to make insulating material.
Above-mentioned purpose is achieved by the following technical programs: be provided with wrapped thin dielectric film 2 on conductor thread core between low-smoke non-halogen flame-retardant cross-linked polyolefin insulating barrier 3 and conductor thread core 1.
Thin dielectric film 2 is that thickness is the mylar insulating barrier of 0.02-0.05mm.
Cable is provided with glass strap lapping layer and low-smoke and halogen-free flame retardant polyolefin jacket 7.
Below with drawings and Examples explanation the utility model.
Accompanying drawing 1, the utility model structural section schematic diagram.
Among the figure: 1 conductor thread core, 2 thin dielectric films, 3 low-smoke non-halogen flame-retardant cross-linked polyolefin insulating barriers, 4 glass strap lapping layers, 5 screens, 6 leaky line, 7 low-smoke and halogen-free flame retardant polyolefin jackets.
Embodiment is 7 core level electrical control cable structural sections as shown in the figure, on each copper cash stranded conductor core 1, be surrounded with thin dielectric film 2, present embodiment adopts 0.02mm mylar band wrapped, extrude thermoplastic low-smoke halogen-free flame-resistant cross-linked polyolefin insulating barrier 3 afterwards again, the screen 5 of pencil core and leaky line 6 wrapped glass strap lapping layers 4 and aluminium-plastic tape, its sheath is a low-smoke and halogen-free flame retardant polyolefin jacket 7.
The insulation degree of cross linking of the present utility model, temperature resistant grade, mechanical strength and ageing-resistant performance all meet the requirements, and setting up thin dielectric film does not influence the whole cable fire resistance, but can guarantee good insulating resistance value.Finished cable is when ambient temperature is 20 ℃ after tested, insulating resistance value 〉=3000M Ω Km, in the time of 90 ℃ 〉=and 3M Ω Km, be better than adopting halogen-free anti-flaming polyolefin to make the like product of insulating material.
Glass strap lapping layer 4 replaces the heat resistance mechanical strength that general mylar lapping layer can strengthen cable.
It is simple to the utlity model has technology, has solved preferably the employing halogen-free flameproof and has handed over The connection polyolefin is made the remarkable advantage of the lower contradiction of insulating materials and insulating resistance value.
Claims (3)
1, low-smoke non-halogen flame-retardant cross-linked polyolefin insulated nuclear electric cable, form by low-smoke and halogen-free flame retardant polyolefin jacket, shielding and glass strap lapping layer, leaky line, conductor thread core and low-smoke non-halogen flame-retardant cross-linked polyolefin insulating barrier thereof, it is characterized in that: between low-smoke non-halogen flame-retardant cross-linked polyolefin insulating barrier and conductor thread core, be provided with wrapped thin dielectric film on conductor thread core.
2, nuclear level electrical cable as claimed in claim 1, it is characterized in that: thin dielectric film is that thickness is the mylar insulating barrier of 0.02-0.05mm.
3, nuclear level electrical cable as claimed in claim 1, it is characterized in that: cable is provided with glass strap lapping layer and low-smoke and halogen-free flame retardant polyolefin jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98204910 CN2346040Y (en) | 1998-06-08 | 1998-06-08 | Nuclear electric cable with low-smoke no-halogen flame-proof cross-linked polyolefine insulated material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98204910 CN2346040Y (en) | 1998-06-08 | 1998-06-08 | Nuclear electric cable with low-smoke no-halogen flame-proof cross-linked polyolefine insulated material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2346040Y true CN2346040Y (en) | 1999-10-27 |
Family
ID=33961415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98204910 Expired - Lifetime CN2346040Y (en) | 1998-06-08 | 1998-06-08 | Nuclear electric cable with low-smoke no-halogen flame-proof cross-linked polyolefine insulated material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2346040Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226790B (en) * | 2007-01-19 | 2010-04-14 | 上海电缆研究所 | Stack top cable for nuclear power station reactor |
| CN101308714B (en) * | 2007-05-17 | 2010-11-10 | 上海长顺电梯电缆有限公司 | Preparing method of low-smoke non-halogen fire-retarding elevator cable |
-
1998
- 1998-06-08 CN CN 98204910 patent/CN2346040Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226790B (en) * | 2007-01-19 | 2010-04-14 | 上海电缆研究所 | Stack top cable for nuclear power station reactor |
| CN101308714B (en) * | 2007-05-17 | 2010-11-10 | 上海长顺电梯电缆有限公司 | Preparing method of low-smoke non-halogen fire-retarding elevator cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: ANQIER SPECIAL CABLE CO., LTD., TIANJIN TO: ANQIER GROUP CO., LTD., TIANJIN |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Tianjin Angel Group Co., Ltd. Patentee before: Anqier Special Cable Co., Ltd., Tianjin |
|
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN ANGEL PRYSMIAN CABLE CO., LTD. Free format text: FORMER OWNER: ANQIER GROUP CO., LTD., TIANJIN Effective date: 20061201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061201 Address after: 300384 Tianjin New Technology Industrial Park Huayuan Industrial Zone Industrial Road No. 2 Patentee after: Tianjin Anqier Puruisiman Cable Co.Ltd Address before: 300190 No. 2 Jinping Road, Ya'an Road, Tianjin, Nankai District Patentee before: Tianjin Angel Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |