CN102496422A - Manufacturing technology of long-length jointless mineral insulation cable - Google Patents
Manufacturing technology of long-length jointless mineral insulation cable Download PDFInfo
- Publication number
- CN102496422A CN102496422A CN2011104414905A CN201110441490A CN102496422A CN 102496422 A CN102496422 A CN 102496422A CN 2011104414905 A CN2011104414905 A CN 2011104414905A CN 201110441490 A CN201110441490 A CN 201110441490A CN 102496422 A CN102496422 A CN 102496422A
- Authority
- CN
- China
- Prior art keywords
- copper strips
- copper
- pipe
- core pipe
- moulding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Manufacturing Of Electric Cables (AREA)
Abstract
The invention, which belongs to a cable manufacturing technology field, relates to a manufacturing technology of a long-length jointless mineral insulation cable. The above technology comprises the following steps that: (1) 12-16% H2SO4 and tap water are successively used to clean a copper strip through a cleaning machine, the cleaned copper strip is dried at a temperature of 35-45 DEG C, and then the dried copper strip enters into a moulding roller so as to perform pipe forming; a tension force alignment copper rod flows into a stainless steel set core pipe and a special magnesium oxide powder is filled while the copper rod is entering into the stainless steel set core pipe, and silicone oil is injected into the special magnesium oxide powder in the set core pipe; (2) argon arc welding continuous welding is performed to the pipe moulding copper strip, and then continuous cycle rolling and annealing are performed. A production period is short. Product manufacturing cost is low. High-pressure resistant and insulation properties are good. A cable production length is long.
Description
Technical field
The present invention relates to a kind of manufacture craft of length non junction mineral insulated cable, belong to the cables manufacturing technical field.
Background technology
Mineral insulated cable is the basic composition structure with copper conductor, the insulation of inorganic matter magnesia, the copper pipe sheath of high conductivity.But its long time continuous working is under 250 ℃, and short time or unusual time can be near 1083 ℃ of work of fusing point (magnesia insulation fusing point is 2800 ℃) of copper.Its fire resistance, durability, fail safe, reliability and economy are that conventional electric power cable institute can't be substituted.But the mineral insulated cable of traditional processing technology production receives the limited length of its copper pipe and copper rod very short, has restricted the utilization of mineral insulated cable largely.
Traditional mineral insulated cable production technology is an assembling magnesia porcelain knob or fill magnesia powder between copper pipe and copper rod, and circulate repeatedly drawing and annealing are until finished product.Because its production technology and equipment, the cable production cycle is long; And because the restriction that copper pipe copper rod length is transported, the production length of cable is restricted.Cause when mounted the user need increase intermediate connector and accomplish the electric wiring cable length, not only making increases electric hidden danger, and has increased cost.
Summary of the invention
Technical problem to be solved by this invention provides a kind of manufacture craft of length non junction mineral insulated cable, and this is with short production cycle, and cost of goods manufactured is low, and the high pressure resistant and anti-insulation property of product aspect is excellent, and cable production length is long.
For solving the problems of the technologies described above, a kind of manufacture craft of length non junction mineral insulated cable may further comprise the steps:
(1) successively uses 12-16% H through cleaning machine
2SO
4, running water cleans copper strips; With the copper strips after cleaning in 35-45 ℃ of oven dry; Copper strips after the oven dry gets into molding roller and manages moulding, and the copper rod of tension force alignment flows into decides the core pipe, and copper rod (conductor) gets into stainless steel to be decided the core pipe while special magnesia powder of can and the copper strips of managing moulding is carried out the argon arc welding continuous welding; Said special magnesia powder is the MgO that contains more than 94%, and all the other compositions are SiO
2With CaO, Fe
2O
3Magnesia powder, be injected with silicone oil in the special magnesia powder of said can;
(2) copper strips to the pipe moulding carries out the argon arc welding continuous welding, circulates rolling afterwards continuously and annealing;
After so-called argon arc welding continuous welding is meant the moulding of copper strips pipe, through three pairs of pressure rollers copper strips side cut seam is accurately aimed at continuous welding, welding gun adopts the Computerized three-dimensional automatic tracking system that copper strips side cut opposite joint is welded;
What is called is rolling to be to guarantee rolling quality at the central point in the hole of conplane control and roll stacks and roll stacks formation at straight line through the adjustment speed of rolls, roll seam, roll stacks;
What is called is annealed into Medium frequency induction annealing, uses electromagnetic induction principle, and the eddy current that in workpiece, produces through alternating current comes heating cable, guarantees by regulating annealing power, and annealing grade mainly guarantees by regulating annealing power.
Said silicone oil is the hydrophobic silicon organic liquid.
Said hydrophobic silicon organic liquid is a dimethyl silicone polymer.
Decide core pipe place at the corresponding stainless steel of pad and increase a stainless steel reinforcement of weldering pad.
Change behind the every production of the cable 50-60km and decide the core pipe.
This technological design is rationally simple, manufactures easily, and length does not have the seam welding mineral insulated cable and has following characteristics:
1, with short production cycle.Because the vertical bag welding of copper strips can realize continuous rolling annealing on a production line, make the like product of this life cycle of the product well below other explained hereafter.
2, cost of goods manufactured is low.With respect to other like product production technologies, the required manpower and materials of this technology reduce greatly, and cost of goods manufactured also decreases.
3, the high pressure resistant and anti-insulation property of product aspect is excellent.Because in process of production, in the magnesia powder insulation, suitably added silicone oil (dimethyl silicone polymer), made that anti-insulation property are better, the lifting of cable concentricity has simultaneously guaranteed that also high voltage performance is better.
4, the structure of product and size and concentricity guarantee easily.Core vertically gets into centring tube through the tension force mould, and the position of tension force mould is between core directive wheel and magnesia powder hopper, its nib and the core guide post mouth of pipe linearly, thereby can guarantee structure and the size of product and core shift not.
5, product once hands over the inspection qualification rate high.The high pressure of product and good insulation preformance, physical dimension concentricity can guarantee, therefore once hand over the inspection rate high.
6, cable production length is long.Because this technology is continuous production one-shot forming; On a production line, directly accomplish the process of repeatedly drawing annealing; Therefore be much better than the traditional mode of production The Manufacturing Process for Mineral Insulated Cables, cable production length can endless in theory, and can produce according to the customer requirement fixed length.
7, easy for installation, cost is low.Because cable length increases considerably, significantly reduced the usage quantity of intermediate connector, simplified greatly therefore that on-the-spot installation is laid and maintenance in the future, and also cost reduces a lot.
Description of drawings
Fig. 1 is a welding procedure sketch map of the present invention;
Fig. 2 is the structural representation of roll of the present invention;
Fig. 3 is a process flow diagram of the present invention;
Among the figure: 1-pipe moulding copper strips, 2-pressure roller, 3-pressure roller, 4-pressure roller, 5-regulate pressure roller, 6-hand hammer, 7-milling train.
Embodiment
A kind of manufacture craft of length non junction mineral insulated cable may further comprise the steps:
(1) successively uses 12-16% H through cleaning machine
2SO
4, running water cleans copper strips, in 35-45 ℃ of oven dry, the copper strips after the oven dry gets into molding roller and manages moulding with the copper strips after cleaning; The copper rod of tension force alignment (conductor) flows into decides the core pipe; Copper rod gets into stainless steel and decides the special magnesia powder of core pipe can simultaneously; Decide to inject silicone oil in the special magnesia powder in the core pipe; Handle without any need for humidity discharging before annotating silicone oil, contain the MgO more than 94% in the said special magnesia powder, all the other compositions are SiO
2, CaO, Fe
2O
3Can add the silicone oil magnesia powder is to flow in the copper sheath through deciding the core pipe; It is 3940mm that stainless steel is decided the core length of tube; Be fixed on the magnesia powder bucket support, with tubaeform rubber sleeve and hopper and decide that charging aperture is connected on the core guide rod, upper and lower opening tightens up sealing with pipe clamp.In order to guarantee the packing of magnesia powder can, through regulate vibration hand hammer 6 (see Fig. 1, form) by direct current machine and cam mechanism and gearbox to copper pipe carry out the knocking of certain frequency (frequency be about 20-80 time/min).
(2) pipe moulding copper strips 1 is carried out the argon arc welding continuous welding, circulate rolling afterwards continuously and annealing;
After so-called argon arc welding continuous welding is meant the moulding of copper strips pipe, accurately aim at continuous welding through 2,3,4 pairs of copper strips side cuts of three pairs of pressure rollers seam, welding gun adopts the Computerized three-dimensional automatic tracking system that copper strips side cut opposite joint is welded; Through regulating the distance between roll 5 adjustment pipe moulding copper strips and the pressure roller;
What is called is rolling to be to guarantee rolling quality at the central point in the hole of conplane control and roll stacks and roll stacks formation at straight line through the speed of rolls, roll seam, the roll stacks of adjusting milling train 7; Realize that through No. 1 milling train, No. 2 milling trains, No. 3 milling trains continuous circulation is rolling;
What is called is annealed into Medium frequency induction annealing, uses electromagnetic induction principle, and the eddy current that in workpiece, produces through alternating current comes heating cable, guarantees by regulating annealing power, and annealing grade mainly guarantees by regulating annealing power.
Medium frequency induction annealing is to use electromagnetic induction principle, the technology that the eddy current that in workpiece, produces through alternating current comes heating cable.Advantages such as induction heating has that firing rate is fast, heating is in material inside and the heat efficiency is high, temperature control precision is high, homogeneous heating, good product quality, the heated oxide skin is few and operation costs are low, non-environmental-pollution and controllability easily are automated well.
Copper strips argon arc welding pad is changeless; It also is fixed that stainless steel is decided the core pipe; Cause pad place stainless steel to decide the core pipe after the long-term work easily and burnt, adopt following two kinds of methods can guarantee the continuity of producing: (1) is decided core pipe place at the corresponding stainless steel of pad and is increased a stainless steel reinforcement of weldering pad; (2) the core pipe is decided in replacing behind the every production of the cable 50-60km.
Claims (5)
1. the manufacture craft of a length non junction mineral insulated cable is characterized in that, may further comprise the steps:
(1) successively uses 12-16% H through cleaning machine
2SO
4, running water cleans copper strips; With the copper strips after cleaning in 35-45 ℃ of oven dry; Copper strips after the oven dry gets into molding roller and manages moulding, and the copper rod of tension force alignment flows into decides the core pipe, and copper rod gets into stainless steel to be decided the core pipe while special magnesia powder of can and the copper strips of managing moulding is carried out the argon arc welding continuous welding; Said special magnesia powder is the MgO that contains more than 94%, and all the other compositions are SiO
2With CaO, Fe
2O
3Magnesia powder, be injected with silicone oil in the special magnesia powder of said can;
(2) copper strips to the pipe moulding carries out circulating rolling continuously and the cooling of annealing back after the argon arc welding continuous welding, after scanning caliper, the detection of eddy current tester, through the tenslator take-up;
After so-called argon arc welding continuous welding is meant the moulding of copper strips pipe, through three pairs of pressure rollers copper strips side cut seam is accurately aimed at continuous welding, welding gun adopts the Computerized three-dimensional automatic tracking system that copper strips side cut opposite joint is welded;
What is called is rolling to be to guarantee rolling quality at the central point in the hole of conplane control and roll stacks and roll stacks formation at straight line through the adjustment speed of rolls, roll seam, roll stacks;
What is called is annealed into Medium frequency induction annealing, uses electromagnetic induction principle, and the eddy current that in workpiece, produces through alternating current comes heating cable, guarantees by regulating annealing power, and annealing grade mainly guarantees by regulating annealing power.
2. the manufacture craft of length non junction mineral insulated cable according to claim 1 is characterized in that, said silicone oil is the hydrophobic silicon organic liquid.
3. the manufacture craft of length non junction mineral insulated cable according to claim 2 is characterized in that, said hydrophobic silicon organic liquid is a dimethyl silicone polymer.
4. the manufacture craft of length non junction mineral insulated cable according to claim 1 is characterized in that, decide core pipe place corresponding said of said argon arc welding pad and increases a stainless steel reinforcement of weldering pad.
5. the manufacture craft of length non junction mineral insulated cable according to claim 1 is characterized in that, changes the said core pipe of deciding behind the every production of the cable 50-60km.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104414905A CN102496422A (en) | 2011-12-26 | 2011-12-26 | Manufacturing technology of long-length jointless mineral insulation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104414905A CN102496422A (en) | 2011-12-26 | 2011-12-26 | Manufacturing technology of long-length jointless mineral insulation cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102496422A true CN102496422A (en) | 2012-06-13 |
Family
ID=46188236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104414905A Pending CN102496422A (en) | 2011-12-26 | 2011-12-26 | Manufacturing technology of long-length jointless mineral insulation cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102496422A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708995A (en) * | 2012-07-04 | 2012-10-03 | 山东中佳新材料有限公司 | Efficient preparation method of copper steel composite square rod |
| CN103208337A (en) * | 2013-04-15 | 2013-07-17 | 安徽瑞侃电缆科技有限公司 | Process for producing flexible inorganic insulating fire-resisting cable |
| CN103440934A (en) * | 2013-08-23 | 2013-12-11 | 江苏远方电缆厂有限公司 | Technology and device for machining copper protection sleeve of strip-shaped mineral insulated cable in softening mode |
| CN103929840A (en) * | 2014-04-18 | 2014-07-16 | 李树章 | Production technology of stainless steel mineral heating cables |
| CN104051077A (en) * | 2014-06-27 | 2014-09-17 | 安徽顺驰电缆有限公司 | Production technology of mine insulated cable |
| CN107071939A (en) * | 2016-12-30 | 2017-08-18 | 久盛电气股份有限公司 | A kind of processing method for heating cable |
| CN108053942A (en) * | 2017-12-04 | 2018-05-18 | 浙江中大元通特种电缆有限公司 | A kind of production method of BTTZ fireproof cables |
| CN108682517A (en) * | 2018-04-26 | 2018-10-19 | 沈阳伊思特机器人自动化科技有限公司 | A kind of fireproof cable process units |
| CN110415900A (en) * | 2019-07-30 | 2019-11-05 | 安徽鹿丰电气科技有限公司 | A kind of intelligent continuous powder filling roll-in rigidity fireproof cable equipment |
| CN111837011A (en) * | 2018-04-13 | 2020-10-27 | 梅勒菲尔股份有限公司 | Surface scanner, arrangement and method for surface defect detection of cables |
| CN112542276A (en) * | 2020-10-16 | 2021-03-23 | 久盛电气股份有限公司 | High-processing-rate rolling processing method for high-performance mineral insulated cable |
| CN113257462A (en) * | 2020-02-10 | 2021-08-13 | 广州番禺电缆集团有限公司 | High strength copper core magnesium oxide fireproof cable |
| CN114038629A (en) * | 2021-11-23 | 2022-02-11 | 浙江元通线缆制造有限公司 | Production equipment for continuously producing rigid mineral cables |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2041258A (en) * | 1979-02-08 | 1980-09-10 | Ass Elect Ind | Making mineral insulated electric cable |
| WO1992015100A1 (en) * | 1991-02-13 | 1992-09-03 | Commissariat A L'energie Atomique | Magnesia based insulating material for high voltage cable used in severe conditions |
| US6759592B1 (en) * | 2001-02-06 | 2004-07-06 | Tyco Thermal Control Uk Limited | Kaolin additive in mineral insulated metal sheathed cables |
| CN101075489A (en) * | 2007-06-11 | 2007-11-21 | 宝胜科技创新股份有限公司 | Method for automatically filling mineral insulated electric cable |
| CN101150000A (en) * | 2007-08-17 | 2008-03-26 | 宝胜科技创新股份有限公司 | Mineral insulation signal cable and method for manufacturing the same |
| CN101315819A (en) * | 2007-05-29 | 2008-12-03 | 上海摩恩电气有限公司 | Production method of large size mineral insulation fireproof cable |
-
2011
- 2011-12-26 CN CN2011104414905A patent/CN102496422A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2041258A (en) * | 1979-02-08 | 1980-09-10 | Ass Elect Ind | Making mineral insulated electric cable |
| WO1992015100A1 (en) * | 1991-02-13 | 1992-09-03 | Commissariat A L'energie Atomique | Magnesia based insulating material for high voltage cable used in severe conditions |
| US6759592B1 (en) * | 2001-02-06 | 2004-07-06 | Tyco Thermal Control Uk Limited | Kaolin additive in mineral insulated metal sheathed cables |
| CN101315819A (en) * | 2007-05-29 | 2008-12-03 | 上海摩恩电气有限公司 | Production method of large size mineral insulation fireproof cable |
| CN101075489A (en) * | 2007-06-11 | 2007-11-21 | 宝胜科技创新股份有限公司 | Method for automatically filling mineral insulated electric cable |
| CN101150000A (en) * | 2007-08-17 | 2008-03-26 | 宝胜科技创新股份有限公司 | Mineral insulation signal cable and method for manufacturing the same |
Non-Patent Citations (1)
| Title |
|---|
| 唐崇健等: "矿物绝缘电缆的生产工艺", 《电线电缆》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708995B (en) * | 2012-07-04 | 2014-05-14 | 山东中佳新材料有限公司 | Efficient preparation method of copper steel composite square rod |
| CN102708995A (en) * | 2012-07-04 | 2012-10-03 | 山东中佳新材料有限公司 | Efficient preparation method of copper steel composite square rod |
| CN103208337A (en) * | 2013-04-15 | 2013-07-17 | 安徽瑞侃电缆科技有限公司 | Process for producing flexible inorganic insulating fire-resisting cable |
| CN103440934A (en) * | 2013-08-23 | 2013-12-11 | 江苏远方电缆厂有限公司 | Technology and device for machining copper protection sleeve of strip-shaped mineral insulated cable in softening mode |
| CN103929840A (en) * | 2014-04-18 | 2014-07-16 | 李树章 | Production technology of stainless steel mineral heating cables |
| CN104051077A (en) * | 2014-06-27 | 2014-09-17 | 安徽顺驰电缆有限公司 | Production technology of mine insulated cable |
| CN107071939A (en) * | 2016-12-30 | 2017-08-18 | 久盛电气股份有限公司 | A kind of processing method for heating cable |
| CN108053942A (en) * | 2017-12-04 | 2018-05-18 | 浙江中大元通特种电缆有限公司 | A kind of production method of BTTZ fireproof cables |
| CN111837011A (en) * | 2018-04-13 | 2020-10-27 | 梅勒菲尔股份有限公司 | Surface scanner, arrangement and method for surface defect detection of cables |
| CN108682517A (en) * | 2018-04-26 | 2018-10-19 | 沈阳伊思特机器人自动化科技有限公司 | A kind of fireproof cable process units |
| CN108682517B (en) * | 2018-04-26 | 2024-07-26 | 沈阳新北方艾克电缆有限公司 | Fireproof cable apparatus for producing |
| CN110415900A (en) * | 2019-07-30 | 2019-11-05 | 安徽鹿丰电气科技有限公司 | A kind of intelligent continuous powder filling roll-in rigidity fireproof cable equipment |
| CN113257462A (en) * | 2020-02-10 | 2021-08-13 | 广州番禺电缆集团有限公司 | High strength copper core magnesium oxide fireproof cable |
| CN112542276A (en) * | 2020-10-16 | 2021-03-23 | 久盛电气股份有限公司 | High-processing-rate rolling processing method for high-performance mineral insulated cable |
| CN114038629A (en) * | 2021-11-23 | 2022-02-11 | 浙江元通线缆制造有限公司 | Production equipment for continuously producing rigid mineral cables |
| CN114038629B (en) * | 2021-11-23 | 2023-11-10 | 浙江元通线缆制造有限公司 | Production equipment for continuously producing rigid mineral cables |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102496422A (en) | Manufacturing technology of long-length jointless mineral insulation cable | |
| CN2867783Y (en) | Ceramic induction heater for tubular electric heater | |
| CN103951157B (en) | A kind of tank furnace for continuous basalt fiber large-scale production and heating means | |
| CN103921071B (en) | Anaerobic copper bar production technology | |
| CN102380688A (en) | Method and device for controlling welding hot cracking during welding by performing electromagnetic induction heating | |
| CN102883490B (en) | Glass die heating device | |
| CN204262678U (en) | Anaerobic copper bar process units | |
| CN103157696B (en) | Stainless steel pipe manufacturing method and application of stainless steel pipe in electric cable of submersible pump | |
| CN101906514A (en) | Superaudio induction heating diffusion device | |
| CN201473564U (en) | Electromagnetic induction heating device | |
| CN105444914A (en) | Transformer oil temperature detection system | |
| CN206318711U (en) | Corundum graphite composite crucible | |
| CN102157228A (en) | Binding type network twisted pair as well as method and device for manufacturing same | |
| CN203768205U (en) | Tank furnace for continuous and mass production of basalt fibers | |
| CN103952659B (en) | A kind of selective oxidation causes the steel surface preparation method from pig copper coating | |
| CN106755825A (en) | For the cooling device of gear quenching process | |
| CN204787186U (en) | Hot water heater of high frequency electric magnetism heating multiple -duct conduit formula | |
| CN102875009B (en) | Medium frequency induction heating device for glass mold | |
| CN204574787U (en) | A kind of safe heat insulation type intermediate frequency furnace | |
| CN202120680U (en) | Device for improving crosslinking quality and speed of silane crosslinked cable | |
| CN205851578U (en) | Energy-efficient multichannel electric heating aluminium bar heating system | |
| CN204346177U (en) | The automatic feeding of pushed bat kiln | |
| CN104733077A (en) | Anti-icing wire and manufacturing method thereof | |
| CN104790929A (en) | Electric preheating device for deep oil sand oil reservoir | |
| CN205733414U (en) | Heavy caliber petroleum natural gas transportation tube welder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120613 |