CN202930088U - Inorganic mineral wrapping insulating corrugated stainless steel sheath flexible fireproof cable - Google Patents
Inorganic mineral wrapping insulating corrugated stainless steel sheath flexible fireproof cable Download PDFInfo
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- CN202930088U CN202930088U CN201220702422XU CN201220702422U CN202930088U CN 202930088 U CN202930088 U CN 202930088U CN 201220702422X U CN201220702422X U CN 201220702422XU CN 201220702422 U CN201220702422 U CN 201220702422U CN 202930088 U CN202930088 U CN 202930088U
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- 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
Abstract
The utility model discloses an inorganic mineral wrapping insulating corrugated stainless steel sheath flexible fireproof cable. A cable core is formed by a conductor and an insulating layer which wraps the conductor. The conductor is formed by twisting and pressing a plurality of copper wires. The conductor is wrapped by multiple layers of inorganic fireproof synthetic mica tapes and is dried to form the insulating layer. The cable core is longitudinally wrapped by an outer sheath which is formed by welding and corrugating a stainless steel tape. A stainless steel tube surface of the outer sheath is provided with a welding seam which has a same length with the cable core and the stainless steel tube. The cable is used in crowded places such as a theater, a shopping mall and a station and has an important significance to the safety of people in a fire, life and property losses can be reduced to the utmost extent, at the same time, no smoke and toxic gases are generated in burning, and the environment is not polluted.
Description
Technical field:
The utility model relates to a kind of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable.
Background technology:
In response to the Globalization policy, no matter any product is on sale throughout in countries in the world, will more and more pay attention to " green material ", namely to note the impact degree to environment.Statistics shows in addition, and the fire that is caused by electric accident accounts for half left and right, and market, singing and dancing entertainment place fire 80% is to be caused by electrical fire, because the aging overload of electric wire is used the larger ratio that accounts for.The combustion of common PVC electric wire (insulation and sheath) burning time delay is fast rapidly, encourages the intensity of a fire, and 1-2min namely loses power supply capacity, and the black smoke that its combustion decomposition discharges can reach the degree that loses the five fingers, causes and breathes and evacuate difficulty.More seriously, the PVC burning can be decomposed release hydrogen chloride, and (HCL) is with the hypertoxic corrosive halogen gas such as bioxin, to cause desperately main cause of people (account for fire fatality factor 80%) in fire, and formation watery hydrochloric acid conducting film is attached on electric equipment, the insulation property of serious reduction equipment, the secondary disaster that formation is difficult to remove also inevitably causes air pollution.
The magnesium oxide insulated fireproof cable is all widespread production and application at home and abroad.But the magnesium oxide insulated fireproof cable is subjected to factory length, insulation property and all many-sided impacts, and its scope of application is less, and can not big-length production, can not be crooked.And copper core embossing copper sheath fireproof cable has in the market increased certain bending property, but its sealing is not examined, and the easy oxidation of copper material and price are high in addition is also very large drawback.
The utility model content:
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable, the problem that mainly solves is exactly that the cable seal performance is good, excellent insulation performance and Halogen smokelessly fire-retardant, good bending property can carry out processing and manufacturing according to user's length requirement.This type of cable uses in places such as the intensive theater of personnel, market, stations, during to the generation fire, personnel's safety has very important significance, also can reduce to greatest extent life, property loss, produce without any smog and poisonous gas when burning simultaneously, to environment without any pollution.
The utility model technical solution problem adopts following technical scheme:
A kind of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable, cable conductor is made of conductor and wrapped insulating barrier outside described conductor, described conductor was formed by many stranded pressing of copper wire, adopt the wrapped and oven dry of inorganic refractory synthetic mica tape multiple-layer overlapped to consist of described insulating barrier outside described conductor, the outside vertical oversheath that is surrounded by of described cable core, described oversheath adopts stainless steel band welding and embossing to consist of, and has a weld seam that is equal to cable core, stainless steel tube length at the stainless steel pipe surface of described oversheath.
Described conductor is single core cylindrical conductor, and conductor is surrounded with 5～9 layer insulatings outward, and the copper wire radical that consists of single core conductor is 1～61.
Described conductor is two cores, three cores, four-core or five core cylindrical conductors, every conductor is surrounded with 5～9 layer insulatings outward, many are surrounded with the stranded rear formation cable core of conductor of insulating barrier and fill at the inorganic fire-resistant gasket for packing of cable core gap employing, be surrounded with 4～7 layer of second insulating barrier outside cable core and described gasket for packing.
Described conductor is that semicircle stranded or three cores of two cores, four-core, five cores are fan-shaped stranded, and conductor is surrounded with 5～9 layer insulatings outward, and insulating barrier is surrounded with 4～7 layer of second insulating barrier outward.
Described embossing stainless steel band oversheath is to adopt the stainless steel band welding to consist of, stainless steel band thickness is 0.30～2.00mm, the embossing degree of depth is at 0.5～4.0mm, the embossing spacing is at 3～8mm, embossing is equidistant embossing, stainless steel tube external diameter after welding embossing is between Ф 8～Ф 80mm, and the stainless steel band after embossing and the distance of cable core are at 0.5mm.
The preparation method of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable comprises the following steps:
1), with the many stranded formation single conductor of pressing of copper wire;
2), consist of insulating barrier with inorganic refractory synthetic mica tape is wrapped outside conductor;
3), the conductor that will be surrounded with insulating barrier carries out that dextrad is stranded consists of cable core in groups, the cable core gap adopts inorganic fire-resistant gasket for packing to fill, cable core periphery wrapped inorganic refractory synthetic mica tape again consists of the second insulating barrier;
4), stainless steel band is vertically cladded rear welded seal;
5) with graining device, stainless steel tube being carried out embossing after, welding is completed processes, the embossing spacing is at 3～8mm, embossing is equidistant embossing, and the stainless steel tube external diameter after welding embossing is between Ф 8～Ф 80mm, and the stainless steel band after embossing and the distance of cable core are at 0.5mm;
6), the cable after embossing is carried out pneumatic compression, lasting 2-10h treat stable gas pressure show air tight till.
Insulating layer material is inorganic refractory synthetic mica tape or refractory metal oxides mixing inorganic insulation band.This insulating barrier is composited with mica powder, high performance resin and various additive, and density is at 1.65g/cm
3The left and right, specific insulation is not less than 2 * 10
15Ω cm, water absorption rate is not more than 0.24%, and long-term serviceability temperature can reach 300 ℃.
Insulate and test by spark test after wrapped.Described insulation spark test: be the insulated wire cores after wrapped to be carried out the spark withstand voltage test on the spark compression tester, select to meet the test voltage of technological requirement or inspection specification regulation according to the size of insulation thickness.
Stainless steel band adopts the laser continuous welding, and the spot diameter of welding is less than 0.01mm, and energy density reaches 100w/cm
2, the heat concentration degree is higher.
Described pressurization inflation leak hunting method, after embossing is completed, in the sealing of cable two ends employing heat-shrinkable T bush, an end is with valve inside, and about the blowing pressure 0.5MPa, the retention time should be not less than 10h.During inflation, gas-filled tube one is terminated on valve inside, do not stop immediately when regulation requires when air pressure reaches, stablize and approximately stop again inflation after 2 hours, remove gas-filled tube.After just charging gas, there is draught head in cable inside, can change after a period of time and causes flase drop, and whether spend two hours and reexamine air pressure has significant change, and the integrated testability time should be not less than 10h, shows when air pressure has significant change and may leak gas.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the technical performance index of the utility model cable:
The fireproof＝fire-proof grade not only satisfies 950 ℃ of GB GB/T19216.21 category-As, and 180min also can satisfy the 650 ℃ of 3h of A level that stipulate in Britain BS6387-1994; 7500 ℃ of 3h of B level; 950 ℃ of 3h requirements of C level; Simultaneously, can also tolerate water spray and mechanical impact in burning;
1.2 factory length is long
No matter be single core, or multicore cable, its factory length can reach the factory length of common cable, and more than the cable length of large specification can reach 500m, the cable length of middle equal-specification can reach 1000m, and the factory length of small dimension cable can reach 2000m.Factory length substantially exceeds BTTZ type cable.Reduce joint hidden danger, reduced the annex cost.
1.3 have flexibility
Because cable conductor has adopted 2 class conductor structures, cable can coil on cable hank, its bending radius≤20D(D is the outside diameter of cable), and BTTZ type mineral insulated cable has adopted real core conductor structure, so this cable is with respect to its better softness of BTTZ type cable.
1.4 during burning, smokeless halogen-free is nontoxic
Because inorganic mineral refractory synthetic mica tape material is adopted in insulation, can not produce any pernicious gas during burning, without comburant, cable can not produce dieseling, more can not occur 2 times and pollute, and deserves to be called the environment-friendly and green product.
1.5 overload capacity is large
Cable not only ampacity is large, and has larger overload capacity.According to cabling requirement, usually the cable surface temperature is 90 ℃, if wiring is not tangible, also not when flammable construction material contacts, the cable cover(ing) temperature can be brought up to 105 ℃.During overload, fireproof cable long-term work temperature can reach 300 ℃;
1.6 without electromagnetic interference
When the lines such as fireproof cable and signal, control lay, under the shielding of metallic sheath, can not produce any interference to the signal of signal, the transmission of control electric wire in same vertical shaft.
1.7 corrosion resistance is better, longer service life, alternative common armored type fire-resisting cable
Stainless steel sheath is more suitable for substituting the armour of common armored type fire-resisting cable, and its better effects if, price be few of difference also, and corrosion resistance is better, longer service life, and in normal operation, its life-span can be equal to building.
1.8 good airproof performance
By adopting the air pressure air test, guaranteed the sealing property of stainless steel sheath welding, guaranteed the electrical insulation capability of cable, can not make moist or have the immersion of moisture under adverse circumstances.
Implementation result of the present utility model, the utility model cable by above cable craft and method of testing formation, its performance has been passed through national electric wire product quality supervision and inspection center and the national fire-proof construction material quality supervision and test of fireproof cable Spot detection, and has met or exceeded the level of similar products at home and abroad.
Description of drawings:
Fig. 1-4 are respectively the structural representations of the described cable of the utility model embodiment 1-4.
Number in the figure: 1 conductor, 2 insulating barriers, 3 gasket for packings, 4 weld seams, 5 second insulating barriers, 6 oversheaths.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment:
embodiment 1: in conjunction with Fig. 1, the fireproof cable of the present embodiment, cable conductor is made of conductor 1 and wrapped insulating barrier 2 outside conductor, conductor was formed by stranded pressing of 1-61 root copper wire, adopt inorganic refractory synthetic mica tape lap wound bag to consist of insulating barrier 2 outside conductor, the wrapped number of plies is the 5-9 layer, dry after insulating barrier is wrapped and pass through the spark withstand voltage test, carrying out the vertical bag of stainless steel band embossing after pass the test processes, form oversheath 6, stainless steel band thickness is 0.30～2.00mm, the embossing degree of depth is at 0.5～4.0mm, the embossing spacing is at 3～8mm, embossing is equidistant embossing, form weld seam 4 after embossing, the distance that stainless steel band after embossing and cable core keep is generally the 0.5mm left and right.Finished product after embossing is completed, does not stop when regulation requires when air pressure reaches about the blowing pressure 0.5MPa immediately by being not less than the gas-flow closure test of 10h, stablize and approximately stop inflation after 2 hours again, removes gas-filled tube.After just charging gas, there is draught head in cable inside, can change after a period of time and causes flase drop, and whether spend two hours and reexamine air pressure has significant change, the integrated testability time should be not less than 10h, can complete by finished product test by other cable testing after the gas-flow closure test.
Embodiment 2: in conjunction with Fig. 2, the fireproof cable of the present embodiment, conductor are that two core semicircles are stranded, and conductor is surrounded with 5～9 layer insulatings 2 outward, and insulating barrier is surrounded with 4～7 layer of second insulating barrier 5 outward.Each semicircular conductor was formed by stranded pressing of 1-61 root copper wire, insulating barrier 2 adopts inorganic refractory synthetic mica tape lap wound bags to consist of, and two core conductors strands are to be dextrad, and the second insulating barrier is wrapped carries out the processing of the vertical bag of stainless steel band embossing after completing, form weld seam 4 after embossing, and through the pressurization air test.The subsequent technique that the second insulating barrier is wrapped after completing is identical with embodiment 1.
Embodiment 3: in conjunction with Fig. 3, the fireproof cable of the present embodiment, conductor is three core cylindrical conductors, every conductor is surrounded with 5～9 layer insulatings outward, single conductor was formed by 1～61 stranded pressing of copper wire, dry after insulation and pass through the spark withstand voltage test, three cylindrical insulated wire cores are carried out the stranding combination, the stranding strand is to being dextrad, the cable core gap adopts inorganic fire-resistant gasket for packing 3 to fill, wrapped 4～7 layer of second insulating barrier afterwards, and the second insulating barrier is wrapped to carry out the vertical bag of stainless steel band embossing after completing and processes, form weld seam 4 after embossing, and through the pressurization air test.The subsequent technique that insulating barrier is wrapped for the second time after completing is identical with embodiment 1.
Embodiment 4: in conjunction with Fig. 4, the fireproof cable of the present embodiment, conductor are that three cores are fan-shaped stranded, and single conductor was formed by 1～61 stranded pressing of copper wire, conductor is surrounded with 5～9 layer insulatings outward, dry after insulation and pass through the spark withstand voltage test, three fan-shaped insulated wire cores are carried out the stranding combination, and strand is to being dextrad, wrapped 4～7 layer of second insulating barrier afterwards, the second insulating barrier is wrapped to carry out the vertical bag of stainless steel band embossing after completing and processes, and forms weld seam 4 after embossing, and through the pressurization air test.The subsequent technique that the second insulating barrier is wrapped after completing is identical with embodiment 1.
Claims (5)
1. inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable, cable conductor is by conductor (1) and wrapped insulating barrier (2) formation outside described conductor, it is characterized in that, described conductor was formed by many stranded pressing of copper wire, adopt the wrapped and oven dry of inorganic refractory synthetic mica tape multiple-layer overlapped to consist of described insulating barrier (2) outside described conductor, the outside vertical oversheath (6) that is surrounded by of described cable core, described oversheath (6) adopts stainless steel band welding and embossing to consist of, stainless steel pipe surface at described oversheath has one and cable core, the weld seam that stainless steel tube length is equal to (4).
2. a kind of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable according to claim 1, it is characterized in that, described conductor (1) is single core cylindrical conductor, and conductor is surrounded with 5～9 layer insulatings outward, and the copper wire radical that consists of single core conductor is 1～61.
3. a kind of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable according to claim 1, it is characterized in that, described conductor is two cores, three cores, four-core or five core cylindrical conductors, every conductor is surrounded with 5～9 layer insulatings outward, many are surrounded with the stranded rear formation cable core of conductor of insulating barrier and fill at the cable core gap inorganic fire-resistant gasket for packing of employing (3), be surrounded with 4～7 layer of second insulating barrier (5) outside cable core and described gasket for packing.
4. a kind of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable according to claim 1, it is characterized in that, described conductor is that semicircle stranded or three cores of two cores, four-core, five cores are fan-shaped stranded, conductor is surrounded with 5～9 layer insulatings outward, and insulating barrier is surrounded with 4～7 layer of second insulating barrier (5) outward.
5. a kind of inorganic mineral lapped insulation embossing stainless steel sheath flexible fire-proof cable according to claim 1, it is characterized in that, described embossing stainless steel band oversheath (6) is to adopt the stainless steel band welding to consist of, stainless steel band thickness is 0.30～2.00mm, the embossing degree of depth is at 0.5～4.0mm, and the embossing spacing is at 3～8mm, and embossing is equidistant embossing, stainless steel tube external diameter after welding embossing is between Ф 8～Ф 80mm, and the stainless steel band after embossing and the distance of cable core are at 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220702422XU CN202930088U (en) | 2012-12-18 | 2012-12-18 | Inorganic mineral wrapping insulating corrugated stainless steel sheath flexible fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220702422XU CN202930088U (en) | 2012-12-18 | 2012-12-18 | Inorganic mineral wrapping insulating corrugated stainless steel sheath flexible fireproof cable |
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| CN202930088U true CN202930088U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220702422XU Expired - Fee Related CN202930088U (en) | 2012-12-18 | 2012-12-18 | Inorganic mineral wrapping insulating corrugated stainless steel sheath flexible fireproof cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982868A (en) * | 2012-12-18 | 2013-03-20 | 安徽华能电缆集团有限公司 | Inorganic mineral wrapped insulated flexible fire-proof cable provided with crimping stainless steel sheath and fabrication method of flexible fire-proof cable |
| CN105448413A (en) * | 2015-12-18 | 2016-03-30 | 江苏上上电缆集团有限公司 | Semicircular conductor power cable and manufacture method thereof |
| CN109509581A (en) * | 2017-09-15 | 2019-03-22 | 上海电缆厂（南京）有限公司 | A kind of strand cable with enhancement layer |
| CN109903897A (en) * | 2019-02-28 | 2019-06-18 | 上海胜华电气股份有限公司 | A kind of mineral insulation ripple copper sheath cable and preparation method thereof |
-
2012
- 2012-12-18 CN CN201220702422XU patent/CN202930088U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982868A (en) * | 2012-12-18 | 2013-03-20 | 安徽华能电缆集团有限公司 | Inorganic mineral wrapped insulated flexible fire-proof cable provided with crimping stainless steel sheath and fabrication method of flexible fire-proof cable |
| CN102982868B (en) * | 2012-12-18 | 2015-04-29 | 安徽华能电缆集团有限公司 | Inorganic mineral wrapped insulated flexible fire-proof cable provided with crimping stainless steel sheath and fabrication method of flexible fire-proof cable |
| CN105448413A (en) * | 2015-12-18 | 2016-03-30 | 江苏上上电缆集团有限公司 | Semicircular conductor power cable and manufacture method thereof |
| CN109509581A (en) * | 2017-09-15 | 2019-03-22 | 上海电缆厂（南京）有限公司 | A kind of strand cable with enhancement layer |
| CN109903897A (en) * | 2019-02-28 | 2019-06-18 | 上海胜华电气股份有限公司 | A kind of mineral insulation ripple copper sheath cable and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20181218 |